Fastest Speeding Ticket Ever: 242mph in a 75mph Zone.

(Only 167 mph over the limit)
From Wikipedia

During its review of the CCR's successor, the CCX, BBC television program Top Gear reported that the Koenigsegg CCR holds the fastest speeding ticket in the United States allegedly occurred in May 2003 in Texas. It was supposedly 242mph (389 km/h) in a 75mph zone. The car was involved in the San Francisco to Miami Gumball 3000 Rally.

The driver Arthur Chirkinian was arrested and the car towed. His co-driver paid his bail and they retrieved the car from impound. While trying to catch up to the other gumballers the driver noticed smoke from the engine and his oil pressure was low. He pulled over to find his Oil cap had gone "missing" while it was impounded. Arthur Chirkinian hitched a ride to the local Volkswagen dealership where he purchased a brand new Volkswagen beetle and drove it to where his CCR was parked. He filled the CCR back up with oil and took the oil cap off the Beetle and put in on the CCR as that is the only oil cap that would fit his car. He then took off in hopes of catching everyone else, leaving a brand new Beetle on the side of the road with the doors unlocked and the key still in it . He caught up to the pack later that night in New Orleans.