They say a 1000 cars, looks like a few Benzes:
http://www.kruseinternational.com/auctions/return.asp?MAKE=Mercedes-Benz&AUC_CODE=houston05&AUC_BREAD=Houston%202005&YEAR=
Including
Mercedes-Benz 600 Roy Orbison Four Door
This Mercedes Benz was formerly owned by Roy Orbison. This Mercedes is
loaded with options: am/fm cassette, factory air, bucket seats, dual
exhaust, side curtains, telephone, all the manuals, power antenna,
brakes, locks, seats, steering, and windows. It also has a hydraulic
suspension system, hydraulic open and close trunk, new rubber seals,
gaskets, and bushings, in 1998, new tires in 2000, power sun roof, and a
cover for the car. This 1972 Mercedes 600 was ordered in 1971 by Roy
Orbison. A copy of the original purchase order comes with the vehicle.
Other notable people owning 600s include: King Hussein of Jordan, Mao
Tse-Tung, Queen Elizabeth II, the Shah of Iran, Hugh Hefner, Marshall
Tito of Yugoslavia, Prince Rainier of Monaco and The Beatles. This
superbly maintained 600 has only 12,000 original miles on it.
* ENGINE - 8
* CU IN - 6332
* TRANS TYPE - Auto
* EXT COLOR - Black
* INT COLOR - Black
<https://www.kruseinternational.com/bid/register.asp?AUC_CODE=HOUSTON05>
<http://www.kruseinternational.com/auctions/houston05/index.asp>