Competition Cams 947-16 Hi-tech Drag Race; Valve Springs on 2040-parts.com

Hennessy ad features record-breaker Sir Malcolm Campbell

An unusual thing happened today. We didn't skip the preroll ad on a YouTube video as soon as we were able. In fact, we watched the whole thing, then clicked through and watched it again.

Vuhl 05 is a Mexican Ariel Atom – costs from £66,000

The Vuhl 05 (pictured), track-focused road car, has been revealed The Vuhl 05 – which has been teased recently – was unveiled this afternoon in London as Mexico’s answer to the Ariel Atom. The Vuhl 05 uses a bonded monocoque with honeycomb panels and aluminium covered on plastic panels to keep weight down to just 695kg. That means that even though the Vuhl 05 has only 285bhp available from its mid-mounted 2.0 litre turbo Ford EcoBoost engine, it can still get to 62mph in 3.7 seconds thanks to a power to weight ratio of 400bhp per tonne.

Mercedes-Benz starts voluntary recall of 2013 SL-class

Mercedes-Benz has initiated a voluntary recall for its 2013 SL-class due to an issue with the air-conditioning system. Under “worst-case condition” testing during a severe front impact, a rupture of the refrigerant line is possible, which could cause a fire in the engine compartment. According to the report from Mercedes Benz, the refrigerant does not ignite under normal conditions.