Marine Engine Tach Sync. on 2040-parts.com

One Lap of the Web: Cutaway F1 cars, Bugatti's Blue Dream and building your own paint booth

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Sauber Motorsports invites you to take a look under the skin in their Cutaway Insights YouTube series.

Bentley Continental GTC (2011) first official pictures

Bentley has shown the convertible sister to the new Continental GT coupe: it's the new Conti GTC, due to be unveiled at the 2011 Frankfurt motor show. The Continental GTC Mk2 is entirely in line with the latest coupe - a sophisticated, subtle update to the 2005 original. There's the same smoother front end styling, the more squinty headlamps and a more exaggerated 'power line' with incredibly sharp creases.

Mercedes R-class facelift (2010) first official pictures

This is the facelifted Mercedes R-class, unveiled today at the 2010 New York auto show.  It lives, and in the UK the new model will only be available as an entry level, rear-drive R300 CDI and a top-spec, long-wheelbase R350 CDI. The R300 CDI BlueEFFICIENCY 2WD (to give this big beast its full name) is 7% more efficient than before but still offers the same power and performance. The more snappily titled R350 CDI 4MATIC is also more economical (its 33.2mpg bettering its predecessor by 2.8mpg) but also more powerful, with outputs of 261bhp and 457ft up from 218bhp and 376lb ft.