Klotz Oil Kl-600 Nitro Additive 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.

Mercedes-Benz prototypes spotted

Modern technology makes it harder for automakers to hide their upcoming products from prying eyes. Take, for example, these images sent to us from Autoweek subscriber Jonathan Peters while he was in Utah. Peters speculates that what he saw was a gathering of a varied Mercedes-Benz cars being tested, along with cars from other carmakers for comparisons.

Aston Martin reveals Vantage N430 and Carbon editions before Geneva

Stop us if you've heard this one before: Aston Martin is bringing two special editions to the Geneva motor show next month. Unfortunately neither of them is coming to the United States, but since they're Aston Martins, we figured you'd still want to be in the know. The V8 Vantage N430 builds on the N420 special edition from 2010.