Name for hybrid/eco/highmpg club?

[sheepdog 44]

Hey, i want to start an informal club in my area but can't think of the right name for it. The majority of members will be Hybrid owners, mostly hybrids other than Prii. But i want Metro's, Diesels, Hypermillers, ecomodders and anyone interested in gaining more mpg out their car to join. So what word encompasses all of these people together?

Cannot be ecomodder or hypermiller club as they wouldn't know those terms and it many of them don't do that stuff.