Motorised surfboards weigh just 15kg and travel at speeds of up to 33mph . Capable of thrusting riders into the air off waves and the wake from boats . Contraption , made in Switzerland , is powered by a two-stroke engine .
Motorised surfboards weigh just 15kg and travel at speeds of up to 33mph . Capable of thrusting riders into the air off waves and the wake from boats . Contraption , made in Czech Republic , is powered by a two-stroke engine .