Looks like the tradition of being buried with your car has a long and storied history:

Decorated with jewellery and finely wrought harness and chariot gear, the 2,400-year-old grave is thought to have been a rallying-point for Britain's tribes 500 years later when the Romans moved north. Some 300 young cattle from all over the country were brought to Ferrybridge to feed an assembly running into thousands not far from where a Little Chef now stands.

No, not Aurthur, he was about eight centuries later. This guy did whatever he did just a little before Alexander started rampaging around Asia. Amazingly, the pyramids were already 2,000 years old at that point.