fastest I ever driven personally was 200 km/h (125 mph) (on slovak highway in night - also 130 speed limit - whoops but it was only for a while) in my ex-girlfriend fathers (sic!) car Mitsubishi Galant V6

and fastest car I was in was my dads Jaguar XJR6 in which we made 230 km/h (143 mph) on Autobahn.