The Ami 8 of my dad have a high mileage too: 750.000 kilometers in 37 years.

Indeed: http://www.saabnet.com/tsn/press/060918.html
Most famous high mile car is of course this Volvo: http://www.autoblog.com/2010/09/01/irv-gordons-volvo-p1800-closing-in-on-3-million-miles/

Here is a high mileage vehicle I found at 93-year-old Florida woman retires her ’64 Mercury after 576,000 miles on the road.

I believe there is a million mile SAAB 900 Turbo out there