Reviving an old, cheap, GoCart.... Maybe?

[Unsullied_Spy]

Perhaps look into some of the E-Bike motors? Not the hub motors that replace the wheels but they have some big, nasty motors for $200-$300 that should push that thing around pretty well. Sorry I don't have links but there are a ton of non-RC motors out there that should be able to get that thing up to speeds that would be worthwhile, but I'd expect to pay $500ish just for the ESC and motor plus another couple hundred for enough lipos to keep it going long enough to be any fun. I believe it was a 48v 750 watt motor that I saw in a miniature motorcycle that was pushing it to 40ish, I can remember the pictures of the thing like it was yesterday but can't find where I saw it at...