180 in a Ferrari 348. I think it was just about topped out.
Fastest I have driven.....160mph in the Grand Canyon National Park on my drive across country. Came around a corner, onto a straight about 6 miles long, slighty downhill, could see the whole thing. Not another sole at least 5 miles from me except my dad, sat in the passenger seat. Buried it and kept my foot down and took the Subaru to the redline in 5th (I think it was limited to 163 based on gearing).
Good fun.
Saying that, I pick when I drive fast, always have. I will never do it in traffic, and I will never race someone on the streets. There is a difference between reckless driving and driving fast. You drive to the capability of the car, the driver and the conditions.