The BMW i3 electric concept vehicle is seen at the LA Auto Show in Los Angeles Nov 16, 2011. [Photo/Agencies]

Actress Paula Patton poses as she participates in the North American debut of the BMW i3 electric concept vehicle (background) and the i8 hybrid-electric concept vehicle at the LA Auto Show in Los Angeles Nov 16, 2011. [Photo/Agencies]

The BMW i3 electric concept vehicle (L) and the i8 hybrid-electric concept vehicle are seen on their North American debut at the LA Auto Show in Los Angeles Nov 16, 2011. [Photo/Agencies]