What if we scrapped the trackless for the Tron concept, and had two tracks on busbars. Guests are racing someone on the other team, and they speed up or slow down based on two factors:
Power Cartridge (aka Score)
and your Powerport (aka target for other team)
Basically, they go side by side, and guests try to use disc launchers to get their discs to hit the other team's Powerport, or gates/targets. Whenever they shoot a disc, it takes x points and whenever they hit the gate or the other team's port they get an amount added to the cartridge. If a team shoots your port, you loose x . Your score going up or down increases or decreases your speed, etc.