Are hybrid and electric airplanes ready for commercial debut? As on land, so in the air.

Worth it to replace the battery? Dead battery equals worthless hybrid?

Is a rotary engine the key? Still a work in progress “Right now, the propulsion system is too expensive, even with using an existing engine,” GM’s new vice president of global vehicle engineering, Karl Stracke, told Inside Line today regarding the Chevy Volt .

Milburn unveiled $1,000 EV with 100-mile range, swappable batteries back in 1920 [w/video] You’ve come a long way, maybe. Japan EV Club drives 623 miles on a single charge It’s not what we can expect in daily driving, but it is pretty cool. Amusing: Zoe Renault doesn’t want there to be an electric car called the Renault Zoe Ford Fairlane agrees.

The Alpha Prius And the Toyota Prius expands Next March Toyota will debut a new Prius-derivative, the Alpha Prius, that will offer an extra row of seating as well a new lithium-ion battery pack. And according to early reports, pricing on the new Prius will be aggressive. While the new Prius will be built upon the same hybrid powertrain and platform as the current Toyota Prius , it will be about a foot longer, in addition to using the new lithium battery – the same battery technology that will also power the upcoming plug-in Prius .

Early adopters only? 10 percent electric by 2020? Unlike most upcoming EV producers, Nissan is quickly developing the manufacturing capabilities to sell as many as 500,000 EVs per year, about as many hybrid cars as Toyota produces today – more than 10 years after the launch of its first hybrid, the Prius