<b>As a passenger</b>:
225mph in a '32 Willys funny car (the most intense thing EVER - especially because I could barely see anything due to the alcohol fumes burning my eyes)
<b>As a driver</b>:
170mph on my ZX-11
<b>In a car</b>:
165mph in a 1996 Viper at the 2000 IA-2000 show [
http://www.on-e.com/other/graphics/e_viper.jpg]
Two days after I bought my new Cobra I had that thing up to 150mph; I think it might have been able to go 155mph but I ran out of road. :-/
[Yes, I do have a problem..]