According to developer Peter Molyneux in a 2019 interview, the different speed stats for the game's vehicles are entirely for show, and they all drive at the same speed. The lack of different vehicle speeds was due to time constraints stemming from a roughly six and a half week development period, but just seeing supposedly different speed stats when selecting a vehicle seemed to fool critics and players into thinking they were different at the time. Molyneux credits this concession for allowing Bullfrog Productions to focus more time into developing Dungeon Keeper, which would not release until nearly two years after Hi-Octane came out. It's rumored that early builds of Hi-Octane did have different vehicle speeds that were slowly worked on by the development team in their downtime as a side project. Molyneux claimed that this rumor was likely true, but that due to the same time constraints, they could not have made enough progress for the vehicle changes to be implemented into the final game.