Waiting on a 1HP industrial pump motor to put on my son's Razor Dune Buggy go-kart.
I upgraded the stock setup from 24V to 36V, but my son wanted more speed. So I went to a larger 1000W 36V motor on 48V and regeared with a 100A controller, but that proved too unreliable and something was always about to catch fire (gear ratio too low, controller too big...). I was going to regear and make some other tweaks, but a really good deal on eBay came up for the big motor, so went the bulletproof route.
So now going with a 24V American made industrial motor running at 48V, same 100A controller, running 8 gauge wire and geared for around 25 MPH. At that gearing, it should be capable of towing a car. Literally, a guy on modifiedelectricscooters has a similar setup that he towed his buddy's Maxima with!
Also waiting on a 50" LED TV for the game room, the first one shipped was delivered shattered...