to drive upside down go to the place with the water...
To drive upside down go to the place with the water and gae a hovercar go to a place with water go to the lowest level and drive towards a dock when you are halfway under it go up. If you did it right then you should be upside down in the water
CAUTION!!!!!!!!!!: if you hit any thing you will explode
More tricks, tips and cheats for this game are right here - Jak II: Renegade cheats
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