Ultra-Efficient BMW Four-Seat Plug-In Hybrid For Research Only, Not Sales: Report
The limited-production Volkswagen XL1 ultra-economy two-seater gets astounding fuel efficiency from its two-cylinder diesel plug-in hybrid powertrain. It’s well over 100 miles per gallon if you use the European test cycle (which differs from U.S. tests). But at a six-figure price and a production limited to a few hundred, it’s not likely to have a… …read more