The Combidrive Mouse was created in the mid 1990's in Wales (UK) by the Combidrive company. Powered by a 265cc diesal engine and having a plastic body the mouse was capable of up to 255.9 mpg. In 1996 the vehicle set the World record for the lowest petrol consumption at the Shell Milage Marathon in Northants. (UK). The single seater vehicle set a record of 568 mpg. (201.1km/litre)"Read more about Combidrive