Suzuki Gsx-r600 Gsxr 600 2001-2003 Radiator Cap 129612 on 2040-parts.com

Ultimate Street Car Association opens registration for 2014 season

Back in November, the Ultimate Street Car Association was announced at SEMA as a national race series to oversee the Optima Ultimate Street Car Invitational and Qualifying. Registration is now open for the first event at Mazda Raceway Laguna Seca. Those of you who picked up any tuner mag from the last six years will remember the Optima Ultimate Street Car Invitational, which played host to some incredible cars -- and demonstrated an overwhelming bias toward Camaros, it turns out.

2013 Mercedes-Benz GL63 AMG packs 550 hp

Mercedes-Benz is adding a fire-breathing AMG variant of the GL sport-utility vehicle for the first time for 2013. The people hauler will pack a biturbo 5.5-liter V8 rated at 550 hp and 560 lb-ft of torque. Code-named M157, it's capable of propelling the ute to 60 mph in 4.9 seconds en route to an electronically limited top speed of 155 mph.

Bugatti’s 254mph Veyron Vitesse officially world’s fastest drop-top

The Bugatti Grand Sport Vitesse has been officially confirmed as the world’s fastest open-top production car, having been clocked at 254.04mph. The milestone will be celebrated (naturally) with a limited run of special ‘World Record Edition’ Grand Sport Vitesses (which has been on sale since January 2012), with the commemorative cars sporting orange flashes to the carbonfibre bodywork, and orange wheels. Bugatti Veyron Grand Sport Vitesse: a 250mph wind in your hair Bugatti admits that the initial open-top speed target for the Bugatti Grand Sport was a piffling 233mph.