I wouldn't be greedy. I'll settle for the Cobra.
The Cobra helped get the legal speed limit of 70 mph introduced in the UK. In June 1964 AC ran a test car the length of the M1 at speeds of up to 185 mph and though the police couldn't stop them (couldn't catch it) they knew what it was. It was another nail in the coffin of unrestricted speeds in the UK. The 70 limit was imposed in 1967. Cars were a lot slower then!