Monthly passenger miles traveled in California’s paid driverless taxis, summing the miles actually traveled by individual passengers across all trips.
Category: transportation
This Tiny $7,000 Electric Car Is More Popular in Japan Than Toyota’s EVs
Japanese startup KG Motors is building a stylish, single-seat electric car for just $7,000, and has pre-sold 3,300 that it plans to deliver to customers by March 2027.
That’s more than the 2,000 EVs Toyota sold across Japan in all of 2024, according to Bloomberg. Called the “mibot,” KG’s car has a limited 62-mile range and a 37mph top speed.
Could the single-seat ‘mibot’ ignite an all-electric revolution in hybrid-heavy Japan, or even inspire more openness to small, affordable vehicles in the US?
If every US home and personal vehicle goes electric, power outages could spike unless key measures are taken
A future where all homes and vehicles in the U.S. are fully electrified could overwhelm power supply and risk outages unless key upgrades are made, says a new study conducted by Purdue University engineers. But a few strategies could cut two-thirds of the potential costs of reinforcing the nation’s distribution grid to handle this demand.
Electrifying would mean switching a home’s heating system from a boiler to a heat pump and transitioning from gas-or diesel-fueled vehicles to electric vehicles.
“If we install a whole bunch of new electric heating systems for homes and use more electric vehicles and electric water heaters, then we’re going to increase electricity demand a lot. And that’s basically going to require putting in thicker wires, bigger transformers and other infrastructure into the power grid,” said Kevin Kircher, a Purdue assistant professor of mechanical engineering and faculty member in the university’s Ray W. Herrick Laboratories. “And if that happens, utilities will pass the cost of those upgrades to us, the customers.”
Lithium-metal batteries can charge in 12 minutes for an 800km drive
Korean researchers have ushered in a new era for electric vehicle (EV) battery technology by solving the long-standing dendrite problem in lithium-metal batteries. While conventional lithium-ion batteries are limited to a maximum range of 600 km, the new battery can achieve a range of 800 km on a single charge, a lifespan of over 300,000 km, and a super-fast charging time of just 12 minutes.
A research team from the Frontier Research Laboratory (FRL), a joint project between Professor Hee Tak Kim from the Department of Chemical and Biomolecular Engineering, and LG Energy Solution, has developed a “cohesion-inhibiting new liquid electrolyte” original technology that can dramatically increase the performance of lithium-metal batteries. Their paper is published in Nature Energy.
Lithium-metal batteries replace the graphite anode, a key component of lithium-ion batteries, with lithium metal. However, lithium metal has a technical challenge known as dendrite, which makes it difficult to secure the battery’s lifespan and stability. Dendrites are tree-like lithium crystals that form on the anode surface during battery charging, negatively affecting battery performance and stability.
Why maglev trains thrive in Asia while US and Europe lag behind
Maglev momentum: Why Asia speeds ahead while Western high-speed projects derail.
Smooth, fast, and futuristic. Maglev trains are transforming Asia’s mobility while the West struggling to keep up. Find out why.
Atomic ‘CT scan’ reveals how gallium boosts fuel cell catalyst durability
Hydrogen fuel cell vehicles have long been hailed as the future of clean mobility: cars that emit nothing but water while delivering high efficiency and power density. Yet a stubborn obstacle remains. The heart of the fuel cell, the platinum-based catalyst, is both expensive and prone to degradation. Over time, the catalyst deteriorates during operation, forcing frequent replacements and keeping hydrogen vehicles costly.
Understanding why and how these catalysts degrade at the atomic level is a longstanding challenge in catalysis research. Without this knowledge, designing truly durable and affordable fuel cells for mass adoption remains out of reach.
Now, a team led by Professor Yongsoo Yang of the Department of Physics at KAIST (Korea Advanced Institute of Science and Technology), in collaboration with Professor Eun-Ae Cho of KAIST’s Department of Materials Science and Engineering, researchers at Stanford University and the Lawrence Berkeley National Laboratory, has successfully tracked the three-dimensional change of individual atoms inside fuel cell catalysts during thousands of operating cycles. The results provide unprecedented insight into the atomic-scale degradation mechanisms of platinum-nickel (PtNi) catalysts, and demonstrate how gallium (Ga) doping dramatically improves both their performance and durability.
Tesla’s NEW AI5 Chip will be a 40x improvement over AI4
The Electric Viking
Elon Musk: Robotaxis Will Replace Personal Cars, Not Just Uber
Questions to inspire discussion.
🧠 Q: How does Tesla’s upcoming AI chip compare to the current one? A: Tesla’s AI5 chip will be 40 times better than the current AI4 chip, which is already capable of achieving self-driving safety at least 2–3 times that of a human.
💰 Q: What is the expected pricing for Tesla’s robotaxi service? A: Tesla’s robotaxi service is projected to cost $2 per mile at launch, which is cheaper than Uber rides in high-cost areas like Seattle.
Impact on Transportation.
🚘 Q: How will robotaxis affect car ownership? A: Robotaxis are expected to become a viable alternative to car ownership, especially when prices reach $1 per mile, making them cheaper than options like airport parking.
💼 Q: How does Tesla’s robotaxi cost compare to competitors? A: Tesla’s robotaxi can be built and deployed for half the cost of competitors like Whim, potentially offering more competitive pricing.
From noise to power: A symmetric ratchet motor discovery
Vibrations are everywhere—from the hum of machinery to the rumble of transport systems. Usually, these random motions are wasted and dissipated without producing any usable work.
Recently, scientists have been fascinated by “ratchet systems,” which are mechanical systems that rectify chaotic vibrations into directional motion. In biology, molecular motors achieve this feat within living cells to drive the essential processes by converting random molecular collisions into purposeful motions. However, at a large scale, these ratchet systems have always relied on built-in asymmetry, such as gears or uneven surfaces.
Moving beyond this reliance on asymmetry, a team of researchers led by Ms. Miku Hatatani, a Ph.D. student at the Graduate School of Science and Engineering, along with Mr. Junpei Oguni, graduate school alumnus at the Graduate School of Science and Engineering, Professor Daigo Yamamoto and Professor Akihisa Shioi from the Department of Chemical Engineering and Materials Science at Doshisha University, demonstrate the world’s first symmetric ratchet motor.