The 2013 Honda Accord concept on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The Chevrolet Volt electric car on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The 2013 Ford Focus ST on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The Nissan E-NV 200 concept electric van on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The Honda Personal-Neo Urban Transport, P-NUT, on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The BMW i8 concept plug-in hybrid on display at the North American International Auto Show, Detroit, Michigan, USA, North America

A Smart car designed by "Bill the Artist" on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The underside of the 2013 Mustang Boss 302 on display at the North American International Auto Show, Detroit, Michigan, USA, North America

The BMW i8 plug-in hybrid concept car on display at the North American International Auto Show, Detroit, Michigan, USA

The 2013 Ford C-Max Energi plug-in hybrid electric car on display at North American International Auto Show, Detroit, Michigan, USA, North America

Two Chevrolet electric cars on display at the North American International Auto Show; the yellow EN-V pod-like car is a concept; the red Volt is in production, Detroit, Michigan, USA, North America

The Hyundai Genesis on display at the North American International Auto Show, Detroit, Michigan, USA, North America