Audi e-tron concept -- Click above for high-res image gallery

It's probable that, somewhere in the Frankfurt Messe this week, there are hydrogen-powered concept vehicles. From the headlines, though, it's clear that the world's automakers showing off their wares at the Frankfurt Motors Show are taking some time off from promoting the hydrogen fuel cell car and are putting all of their energy into the idea of a car with a plug. Even Audi, where an executive recently called electric cars " idiotic," made a big splash with their overwhelming e-tron concept. Perhaps we'll see more H 2 cars when the auto show season moves back to the U.S., but for now, the lack of fuel cell concepts and the tiny scraps thrown to biofuels are really, really obvious. Just saying.

In any case, if you're headed to Frankfurt and want to print out a list of which plug-in and hybrid cars are where, you can get a PDF listing the cars from Drive Solar.

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