Competition Cams 77216 Valve Spring Retainers - Set Of 16 on 2040-parts.com

One Lap of the Web: Model S carbon footprints, 911 road trips and the Rover 3500

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. -- It's Tesla Model S owner vs.

Infiniti-designed Santa's sleigh (2010)

Today's sleighs are courtesy of Infiniti. The design team in Japan have sketched out a couple of Infiniti sledges for Father Christmas to deliver his presents across the globe in imperious style. The first sleigh looks like an Essence supercar concept meets an FX crossover - from that long snout and high-mounted, wedgy headlamps to the complex, textured surfaces, sliced and diced by a laser-pointer's worth of sloping lines flying off at all sorts of angles.

Jenson Button in McLaren P1 (2013) supercar fly-by

McLaren’s P1 supercar trundled out for its first official drive-by today, when F1 driver Jenson Button drove it into McLaren’s Woking citadel before unveiling his 2013 race car. The stunt confirmed that the P1 can manoeuvre on electric power alone, unlike Button’s MP4-28: the race car’s hybrid KERS system is used to deliver a short power boost to supplement the V8. McLaren predicts the P1’s electric-only mode is a capability its forthcoming Ferrari rival (codenamed F150) won’t be able to match.