2014 Cadillac XTS adds new twin-turbo V6

Cadillac is adding a new 420-hp, twin-turbo 3.6-liter V6 as an option for its XTS sedan for 2014. General Motors unveiled the engine back in March, confirming that it will be an option on the new-for-2014 Cadillac CTS, and recent Cadillac press materials confirm that the engine option will be expanded to the XTS. The all-aluminum engine makes use of direct-injection technology and is the highest-output V6 in GM history.

See the Merc SLS driven by David Coulthard in 3D

Sky's 3D pub channel will this weekend host the premiere of a 3D film showing David Coulthard driving the Mercedes SLS supercar around the Isle of Man. Click here to see the making of the 3D Merc SLS video.It was shot using a second SLS carrying a brace of 3D camera gear bolted to the back. After Sky's premiere, CAR Online will show the film here this autumn.Sky's 3D channel shows in 3000 pubs (click here to find your nearest pub).    If you cannot make it to the pub, the film will be showing in Mercedes dealers and online this autumn.

Audi TT revs up for Geneva auto show

Audi has unwrapped its new TT at a media preview proceeding tomorrow’s Geneva motor show, revealing the new look, contemporary interior and updated mechanical package the German coupe carries into showrooms when North America sales get underway later this year. The third-generation TT has an all-new exterior design. The car is again a three-door liftback and has the same basic dimensions as its predecessor, but is subtly sleeker with more precise detailing and crisper lines.