I recently discovered something amazing. More after the jump.
Jaguar used a Ford Transit as a testbed for the XJ220. "The Transit was transformed by Jaguar into a secret test vehicle for the XJ220’s engine and running gear early on in the development of the XJ220. The van even had a ladder and roof rack fitted as part of its disguise. Unless you noticed the big ZR high speed tyres and XJ220 alloys, there are few clues to the 542bhp engine lurking underneath."