[gameswithgo]

Just 3 general reasons this could be true:

1. some engines will heat soak and lose more power than others under extended load, which doing 300mph will take, and the tuatara is a smaller engine running a lot of boost, more likely to lose power over time compared to some of the other hypercars with larger engines or partial electric power boosts.

2. gearing

3. aerodynamics. not just drag but will the car become airborne/impossible to control, etc