The official description says solo players can drive with a robot co-driver with five voices, or ask a robot driver to take the wheel.
Pick the role that fits your session
If you want to steer, try the robot navigator. If you prefer to observe or take another role, the game description also mentions a robot driver. The public description does not explain voice-by-voice differences.
Keep expectations grounded
Use the in-game options to select the robot role and voice. Compare behavior in a short stage before relying on it in a championship. No exact accuracy, difficulty, or voice advantage is stated in the official description.
Official source
The official Roblox listing is the source for the game features described here. See the source link below.