Jaguar had a bit of a problem after launching the XJ220 in 1992. They weren't being driven that often, which meant there wasn't much call for servicing and maintenance. Rather than waste capacity on the off-chance one might eventually need some work doing, they asked father-and-son duo Don and Justin Law to take over the servicing contract for the 540 hp super car.
They still look after them today, and there just so happened to be a few in the garage when this video was filmed...