Ok I bought several things today
I got 1 Turbo Glo, 2 X-V Racers (which are called Ferrari XV now) and 1 Zip Zap SE James Bond Aston Martin V12 Vanquish and a tire kit for .97 cents.
I will break down each test results.
Turbo Glo - 10 Second Charge. Almost as fast as a Sizzler, but not quite there. Most likely due to the much shorter charging time and also that you use 3xAAA for charging instead of 2xD that Sizzlers use in the Goose Pump. The car is plenty fast enough to make the banks on the Fat Track, however I don't like the short run times at all. Edit: Tried a 90 second charge and it had no effect.
Ferrari XV - 30 Second Charge. Just a tad bit faster than the Turbo Glo. Edit: I tried these on a 90 second charge and they actually lose traction for the first 20-30 seconds (cool and annoying at the same time). Probably due to the fact that they are lighter than Sizzlers. I am willing to bet that these cars are toe to toe with Sizzlers. They are bigger (1/50 scale) than Sizzlers. There is still plenty of room to race them side by side. The charger/launcher it comes with is too big to launch with on the Fat Track though.
Zip Zaps SE - 1 Min. Charge. Ok this car is stock so I really wasn't expecting much from it in the first place. It comes stock with the red 21,500 RPM motor and 12:1 gearing. This car actually did alot better than my Char-G clone (it was stock too). It made it about half way around the bank before it nosed down to the bottom of the bank. They didn't have the motor upgrades at the Radio Shack that I went to so I will see if I can find another one around so that I can try this again. I am actually really impressed with the ZZSE. It has a nice controller and it is proportional enough for my purposes. Once I can get these up to the proper speed I can see some major fun happening.
The motors in the Sizzlers, Turbo Glo and Ferrari XV's all look like slot car motors so I don't think that we will be able to mod the cars (at least not with Bit or ZZ technology), but I'll let you guys decide.