https://www.theautopian.com/the-real-story-behind-paul-newmans-long-lost-v8-volvo-and-the-mystery-of-the-unknown-6th-wagon/

[off topic?]

Paul Newman was a rival of McQueen on the race track and the silver screen.

Newman had modified several Volvo station wagons so he could smash the speed limit without looking like a racer.