They celebrated their joint venture at the Detroit auto show in January 2001 with the unveiling of the stunning Cunningham C-7 concept car.

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For the i3, the BMW Hofmeister kink, a low forward bend in the C-pillar of the car, holds the glass and maximizes visibility to connect passengers to the urban environment.

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While it's a larger car than the C-MAX Energi, it weighs about the same and features pretty much the same plug-in hybrid powertrain with 195 net horsepower and three EV driving modes.

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The car will be called the Cunningham C-7, after America's postwar racing legend, Briggs Cunningham Jr.

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In green car news, Ford's new 2013 C-MAX plug-in hybrid was rated the most fuel-efficient plug-in hybrid available in the US this week.

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The first TV ads for C-Max, this fall, focused on the fun and driveability of the car compared with that of Prius v.

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To top that off, if your car is there for more than a few hours, they lend you a C-class Benz to run around in.

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But as an apartment dweller with nowhere to plug in a car, the only greener Ford option that would work for me is the C-Max Hybrid.

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