Plug-In Hybrid Cars
Plug-ins are hybrid cars 2.0: Charge your car overnight to drive on batteries only for a short range, after which the gas/electric motor kicks in.
With hydrogen power still a long way from widespread viability, plug-in cars may be the next logical step in lower-emission vehicles. Leonardo DiCaprio probably already has several on order.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.