Tittenhurst Park was John Lennon and Yoko Ono's 72-acre estate in Berkshire county in the South of England. According to a book on Lennon's life, he often raced over the "hilly greensward" with his son Julian on an Amphicat six wheeler.

In the biography John Lennon: The Life, author Philip Norman recounts Lennon's spacious home and property as a "seven-year-old's paradise." Julian would later call it a "house of fun." Norman writes:

Father and son felt their real sense of togetherness racing over the hilly greensward on an Amphicat or rowing on the lake.

The Amphicat was a 16-hp, gasoline powered amphibious all-terrain vehicle. Built in the late 1960s and early 1970s by Mobility Unlimited Inc. of Auburn Hills, Michigan, the 'Cat had six-wheel-drive, and steered by skidding one set of wheels at a time, like a tank.

One of the benefits of having a dad who's a music legend.