The eccentric star - who frequently charters private planes and has been accused of having a large carbon footprint - has splashed out around $20,000 on an environmentally-friendly Toyota Prius car.
Michael, 49, was seen leaving Beverly Hills' Sharper Image electrical shop before climbing into the back seat of his super-green vehicle with his driver on Friday (Nov 30, 2007).
The Prius - which is powered by electricity and petrol - has emerged as Hollywood's hybrid car of choice.
Leonardo DiCaprio was one of the first celebrities to purchase a Prius in 2001, and other stars were quick to follow.
Celebrity owners now include Cameron Diaz, Will Ferrell, Jennifer Aniston, Harrison Ford, and Susan Sarandon.
Ferrell has gushed about how much he loves his green car, and even gone as far as to describe it "sexy."
He said: "I absolutely love our Prius. In addition to being obviously economical and environmentally friendly, they drive great and are just plain sexy. There's no reason all Americans shouldn't be driving hybrid cars."
Diaz has also praised the car's fuel efficiency, saying: "It gets 52 miles per gallon. In the city. Isn't that exciting?"
