The fastest I have been going in a car?! Well, I never topped out my Civic, and my Jag has maybe been up to 190km. But I remember the 2 fastest speed I have been driving at.
244km/h and I was VERY scared. It was maybe 2 years ago. I live in Calgary and North of here is a vacation town called Sylvan Lake. I stayed at a guys cabin overnight and I had school the next day. I woke up at 5:45 AM on a wednesday morning and had to be in Calgary before 8:30AM. Sylvan lake is SUPPOSED to be about 1 1/2 hour drive, and I did it in 55 minutes. The car I was driving was my Dads 1993 Jaguar XJS V12 Coupe Auto. It is one of my favourite cars and not many people know this but those things have a 5.3L V12 with 320hp. I didnt have any idea what its top speed might have been but when I hit 240km I didnt push it any further. It still had alot in store I would guess maybe 255km/h top speed.
Here is a pic of a similar one, but to get the idea of what the car looks like, you MUST see it from all angles, ours is white:
Another time I was going about 225 in my Dads 1988 SAAB 900 Turbo Convertible. It was slower than the Jag but WAY more fun because I had the top down and I was on a fairly curvy road in the mountains. I was never scared for a minute because only a handful of cars I've driven feel as connected to the road as that SAAB. Although I generally dont like SAABs.
Here is a similar car but ours was Red:
We have sold the SAAB but the Jaguar is still around with our fleet of cars (13 cars in all) But again, they are mostly old exotics that can be had for a fraction of the price of a Pontiac Sunfire! So Its not like I am fukking Rockefeller junior!