Volkswagen had prototype hybrid technology back in the 1970s. A book called The Complete Book of Electric Vehicles by Sheldon Shacket describes the technology used in Volkswagen's Hybrid-Electric City Taxi prototype, which was based on the Type II microbus. It used the automaker's 1.6-liter air-cooled flat-four (borrowed from the Beetle) along with a Bosch DC shunt electric motor and 11 lead-acid batteries. Interestingly, the hybrid taxi prototype also featured an electric sliding door and a bulletproof bulkhead separating the driver from the passengers. Read more at Jalopnik, and at Green Car Reports.
Country music star Lee Brice is going on tour fueled by biodiesel. Partnering with nonprofit environmental organization Reverb, Brice is using the biofuel to travel to college campuses. "We're hoping to offset the environmental impact of the tour by supporting clean energy projects and using buses and trucks fueled with locally produced biodiesel," says Brice, who is personally focused on natural preservation and water conservation. Read more at Domestic Fuel, or at The Boot.