Detroit Auto Show: Bentley Continental GTC Speed debuts

Bentley will complete its Speed portfolio when it introduces a freshened Continental GTC range at the Detroit auto show. Along with exterior and equipment changes, a new GTC Speed model is added with a more powerful version of the 6.0-liter twin-turbocharged W12 that churns out 600 hp and 553 lb-ft of torque for an improvement of 48 hp and 74 lb-ft over the regular GTC. The result is Bentley's most powerful convertible to date.

Hennessey opens up the LS9-powered Camaro

Hennessey Performance is introducing a convertible version of its limited-edition 2011 HPE700 Camaro. The tuning company will produce just 24 copies of the 2011 HPE700 Camaro, but it hasn't revealed how many will be hardtops or convertibles. “We have already sold several of our 2011 HPE700s in hardtop form, increasing the potential for the convertible LS9 Camaro to become an even rarer option than before,” said John Hennessey, president of Hennessey Performance.

So Cube ads aren't square, Nissan hires college kids

To bring college students into Nissan dealerships to look at the quirky new Cube, Nissan North America has asked for a little help--from college students. Nissan has retained marketing classes at 10 large U.S. universities to create ad campaigns that will run on their campuses this spring.