IN5 has a great story by Adam Aston on a new generation of very advanced, stackable electric cars/carts that could help alleviate the problems of urban transportation??oo much traffic and bad quality air. People could take the train into the cities, pick up one of these really cool little electric jobbies and tool around town. Then drop them off and get back on the train. And if you live in the city, you might want to take one of these instead of a taxi.

The really cool tech thing are the ??heel robots?the propel the cars. There is no drive train.