Gardeners at the Williams F1 headquarters spend hours every month trimming their topiary - which is positioned in a gravel trap.

The 11ft long car is made from six plants and each 6ft high mechanic is made from two.

Visitors to the HQ in Grove, near Didcot, Oxfordshire, are stunned by the work, which shows the mechanics changing the car's wheels during a pit stop.

An Italian nursery made the model for Ferrari but Williams bought it and had the shape of the car changed to reflect their own car design.

It took two and a half years for the plants to weave around their metal frames and they are now completely covered.

Tim Lightfoot, facilities manager at Williams, said visitors were always impressed by the work.

He said: "Our gardeners trim the plants into shape by hand and take a great deal of care doing it.

"It is hard work but the result is really impressive.

"The topiary has pride of place outside our conference centre and is popular with the many people who visit us each year.

"Many guests are shocked by the size of it.

"We often have people trying to sit in it but it's not a very comfortable drive. It doesn't go very fast either."

Williams-Toyota are currently sixth in the Formula1 constructors' championship on 30.5 points.

Driver Nico Rosberg has secured all their points and lies in sixth place in the drivers' championship. Kazuki Nakajima is yet to score this season.