Register for your free ZDNet membership or if you are already a member, sign in using your preferred method below.
Plug-in hybrids use less gas and consequently can get about 100 miles per gallon. However, it will take years before they become widespread.
A Mercury Sable retrofitted with one of Frank's hybrid systems. The car can also run on ethanol and solar-generated electricity, freeing it up from fossil fuels entirely. The stickers are optional.