The Mark I was powered by 2 90-horsepower BMW motorcycle engines(alongside the original Ford Engine), producing 180 horsepower. A fan was fitted in the back for a thrust, and a small grass skirt made by James May was fitted below. However, their initial design failed because Jeremy took it very fast into the River, thus sinking the Hovervan. Jeremy blamed Richard's 90 horsepower engines, while James and Richard blamed Jeremy.