That's gonna be cool. You should fill it with Moonshine. If you convert your engine to run on ethanol, and mount 2 hoses it'll be even easier to drink and drive at the same time.
might want to put a disclaimer on it letting ppl know gas is inside.
only because if a drunk see that mounted on a gokart first thing in his mind FREE BEERlol
that would be worth seeing
u would have to be really drunk to drink from an old keg welded to a gokart with pipes going to the engine