Since it is Tomorrowland I think the idea of re-theming it with a focus on alternative energy might not be a bad idea though.
If they are going to keep it as a speedway, then I hope they add something like the Radiator Springs Racers E-Ticket they are adding to DCA.
Perhaps, and this is just a guess, Disney did not pursue a renewal of the sponsorship because they are planning a removal of the ride? There have been many rumors in the past about Disney dumping this attraction and adding a Pixar themed coaster in the area.
Probably just wishful thinking on my part?