Although it may look like someone's just attached a set of roller skates to the front of a conventional bike, it has proven popular with stunt enthusiasts all over the world.

The four small wheels at the front allow the rider to negotiate obstacles with ease, using his or her body weight. The manoeuvrability is said to be like surfing. It is also apparently safer, with a braking system akin to anti-lock brakes in cars to prevent skidding.

You can make some Street Surfer stunts of your own for £600.