Harley Davidson New Various Parts Lot on 2040-parts.com

One Lap of the Web: Hemi history, vintage Audis and Detroit Grand Prix

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. -- Watch a Pontiac Grand Am meet its demise as Pennsylvania sanitation workers crush it with a garbage truck.

Citroën Cactus concept with Air Bump technology confirmed for Frankfurt debut [w/Video]

Citroën's Cactus concept featuring a mysterious sounding 'Air Bump' technology will be taking center stage at the carmaker's stand at this year's Frankfurt motor show. The carmaker has released just one image of the concept along with a 21-second video (see left) showing a spongy panel labeled ‘Air Bump' being poked. Although this doesn't really tell us much about what this new technology actually does, we suspect the panels featured in the video are inserted into the bumper and can protect it from the smaller-scale collisions that can happen in everyday life.

Mercedes S63 AMG arrives – but the UK won’t get the most appealing option

The 2014 Mercedes S63 AMG (pictured) revealed We did think Mercedes would get more mileage out of their tease for the 2014 S 63 AMG, but this morning they’ve revealed the fastest version of the new S Class so far – the new Mercedes S 63 AMG. The S63 AMG is exactly what you’d expect the new S Class AMG would be. It comes with the usual array of AMG cosmetic tweaks including a big, butch front bumper, bigger sills, AMG alloys and ‘Biturbo’ badges on the wings to shout its intent.