Octane: 132.771 kph

We render the saved RocketSim trajectories as collision boxes and a ball. The GIFs play at about 0.2× speed. Each JSON file contains the initial state, controls and contact records.
Ground-start flip · Carry and flick · No flip, approaching ball · No flip, stationary ball · Airborne dodge · Ground flip, later contact
Car starts at 64.8 kph; ball falls from 3 m.
Car and ball start at 43.2 kph; carry before jumping.
Car starts at 82.8 kph; ball approaches at 36 kph.
Stock sleeping-ball control; car starts at 82.8 kph.
Car starts airborne at 64.8 kph with an unused dodge.
Same grounded search; first contact at least two ticks after dodge, incoming car at or below its normal cap.