I know this is a bit of a long shot, but does anyone know of any "all you can race" go-karting places in New York City?
I don't care if the conditions are hellish, for example: "this offer only applies during the graveyard shift (23:00 - 07:00)".
Karts Indoor Raceway on Long Island offers unlimited racing Tuesdays between 6pm to 10pm for $52.
If you're willing to travel a bit farther, iPlay America in Freehold, NJ, has an iRide Plus Pass Package which offers unlimited go-karting for a day for $29.95. NJ Transit buses will get you there in an hour and a half from Port Authority terminal.
Finally, Pole Position Raceway in Jersey City, NJ, has a "Legend" membership which lets you race all you want for an entire year. It costs $4999. They do not have any other unlimited race memberships.