2013 Polaris Sportsman Xp 850 Ho Eps Exhaust Header Pipe on 2040-parts.com

GM spending $336 million on plant upgrades for Volt production

General Motors on Monday said it would spend $336 million on upgrades to the Hamtramck plant near downtown Detroit to build the Chevrolet Volt hybrid car. The plant will begin building Volt prototypes next spring, using the Hamtramck plant's existing production line. Production of saleable vehicles begins next fall.

Top Gear Video: The Stig, Chris Evans & a 400bhp Black Cab

The Stig takes Chris Evans for an ExCel tour in a 400bhp Black Cab It’s not difficult to work out when Top Gear has something to promote; they send us videos and stories. And with the Top Gear Live Show looming on the horizon, TG has just sent us video of The Stig taking Chris Evans for a blat in a 400bhp Black Cab. Just to make sure everyone knows that Top Gear Live has moved out to the ExCel Centre in East London, the hair-raising ride in the back of Stiggie’s cab was filmed in – and around – an underground car park at the Excel Centre.

Video: Porsche GT2 RS attacks GingerMan Raceway

You saw our walk-around and overview of the 2011 Porsche GT2 RS earlier this week. As promised, here's the VBox footage of Autoweek editors blasting around GingerMan Raceway in southwest Michigan doing what the Porsche does best. So far we've brought you track-day action featuring the Chevrolet Corvette Z06 and the Porsche GT2 RS--what's missing?