Transportation

Autonomous race cars go head-to-head, break records in Las Vegas
Autonomous race cars took to the track at CES, opening new forms of competition and setting speed records.
Startup’s bladeless flying car is designed to reach Mach 0.8
Jetoptera is designing quieter, safer vertical take-off and landing (VTOL) vehicles with bladeless propulsion systems.
MIT grads unveil the world’s first ammonia-powered semi truck
Amogy, a startup founded by four MIT grads, has unveiled an ammonia-powered semi truck that can be refueled in just eight minutes.
World’s largest plane sets new flight record
This Swedish start-up is building an electric airliner
The mail is finally going electric (its trucks, anyway)
hydrogen fuel
Rolls-Royce tests its first hydrogen-powered plane engine
electric tricycle
This amphibious electric tricycle (and camper) costs $14,600 
The technology we (or aliens) need for long-distance interstellar travel
Stanford engineers warn that electric car charging could crash a grid powered by renewable energy 
Walking to school is more likely to keep kids active as they age
Electric planes are coming: Short-hop regional flights could be running on batteries in a few years
Paradox-free time travel is “logically” possible, say physicists