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Groupon vouchers for cars? No

The Groupon juggernaut rolled into auto retailing last week, and dealers around the nation watched intently to see whether the online coupon phenomenon could drive herds of shoppers into showrooms. So far, no. Only four consumers agreed to pay $200 for a $500 discount voucher on a new-vehicle purchase at LaFontaine Buick-GMC-Cadillac in Highland, Mich.

First Sight: Smart Fortwo and Forfour

"Dress-down Wednesday," remarked a colleague as Daimler CEO Dieter Zetsche walked on stage wearing jeans and no tie. While it was a hot day in Berlin, Zetsche's excuse for his informal attire was the occasion – the new Smart is here. Its prospective owners, he explained – young, urban consumers with an active lifestyle, not the typical members of corporate Germany – adhere to a different, if similarly rigid etiquette.

Nissan stops taking Leaf reservations, has 20,000 on the books

Nissan has accepted 20,000 reservations for the Leaf electric car and said it has stopped taking orders until next year. Nissan began taking reservations for the Leaf in May. The Leaf, which is about the size of a Nissan Versa, is powered by an 80-kilowatt electric motor that produces 107 hp and 206 lb-ft of torque.