Red Bull trio collect Supermoto machines.

The rumours of Juan Pablo Montoya's shoulder injury being caused by a motorcycle accident has done little to diminish the interest of three fellow F1 drivers in two-wheeled machines - with the news that Red Bull drivers Christian Klien, David Coulthard and Vitantonio Liuzzi have all been given Supermoto bikes (pictured).

While many drivers use bicycles or tiny scooters to move around the race circuit, Klien, Coulthard and Liuzzi will rely on far more masculine 'real bikes' provided by KTM. Red Bull and KTM share a successful relationship in many motorsports and, despite the obvious dangers, the idea to provide Supermoto bikes to the F1 trio was born.

A Supermoto bike is effectively a Motocross bike fitted with road - rather than off-road - tyres and equipped with beefier brakes. Although nowhere near as fast as a full road racing machine, such as a Superbike, the fast growing popularity of Supermoto stems from the fact that they are easy to slide sideways, perform tricks on and can negotiate sizable jumps.

The three F1 drivers certainly seem to enjoy their new toys anyway, with Austrian Klien (lower pic) something of a wheelie expert already...

But a word of caution; Supermoto bikes are widely used by MotoGP riders to keep their sliding skills finely honed - and at least two top riders have been left with broken bones after falling from them in the past year alone. Perhaps Christian should put a helmet on...