This week at TreeHugger: French racers are topping 10,000 MPG at the Shell Eco-Marathon in Nagaro, France. More news on green New York taxis, this time all-electric. Check out a brief and convenient jaunt through the available car sharing options. As the debate over gas prices gets more lively and heated, TreeHuggers the world over celebrate GM 's announcement that it will finally be putting down the Hummer H1 in June. More news is in on Honda's fabled Fit hybrid, while Mazda has developed an exterior-grade bioplastic suitable for autos. This week on TreeHuggerTV, see Los Angeles's veggie-oil maestro, Brian Lovecraft report from his veggie-conversion mission control center, Lovecraft Biofuels.

[TreeHugger's Perspective Shift roundup appears every Wednesday]