Karit Veloce Kart M8 D17 Right-hand Shifter Kart Stub Axle "2-dot" New Take-off on 2040-parts.com

Infiniti Etherea concept (2011) at 2011 Geneva motor show

This is the Infinit Etherea, unveiled today at the 2011 Geneva motor show, and the company is unusually candid about the purpose of this new, smaller Infiniti show car. The blurb says: 'it is a compact luxury model that previews how a future entry-level Infiniti could look.' Says it all really. The compact vehicle is aimed at the younger buyer looking for a little luxury - it's all about downsizing.

Shelby 1000 Mustang: A completely bonkers dose of American Muscle Car

Shelby 1000 Mustang Shelby has taken the Ford Mustang GT500 and given it up to 1085bhp to create the Shelby 1000. But it’ll cost you the best part of £150k. Fifty years ago Caroll Shelby changed UK motorways forever by teaming up with AC to produce the AC Cobra which, it is said, was responsible for Barbara Castle introducing the 70mph speed limits on motorways after AC used the new M1 to test the AC Cobra at speeds of up to 180mph.

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.