Actually the XJ220 was built in much greater numbers, and its arrival coincided with the collaps of the supercar market, leaving Jaguar with quite a few unsold cars. Until very recently these cars could be bought with zero miles on the odometer. If such a car disappears from the population it always because of a freak accident, nobody in a right state of mind would scrap it, unless its condition has suffered from great neglect and the car can only used as a parts supplier.
"I find the whole business of religion profoundly interesting, but it does mystify me that otherwise intelligent people take it seriously." Douglas Adams