242 MPH (390 KMH!) in Texas! Wow! Watching Top Gear last night and was looking to confirm it:
The fastest speeding ticket in the world allegedly occurred in May 2003 in Texas. It was supposedly 242mph in a 75mph zone. The car was a Swedish-built Koenigsegg, which was involved in the San Francisco to Miami Gumball 3000 Rally.
-S