Photos: From gas guzzler to green extreme

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.

Andrew Frank/University of California, Davis

By Bill Detwiler

Bill Detwiler is Editor in Chief of TechRepublic and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the ...