Frankfurt: Volkswagen's Radical 170-MPG Diesel Two-SeaterFrankfurt: Volkswagen's Radical 170-MPG Diesel Two-Seater
2009 Volkswagen L1 Concept Covering all the green-car bases at the 2009 Frankfurt Auto Show, Volkswagen unveiled not only the E-Up electric city car concept but also the L1, a radical 170-mpg tandem two-seat diesel hybrid...