There were 2 different concepts for Slot Car Racing Sonic. There's been a slot track before...but it wasn't very good at all, with only stickers pasted onto ordinary cars. This one is trying to innovate. The flat-track slot-racer WAS produced, and so it's prototype photo and actual photos are now…
Here are 3 patches, but where are they from? Each one is embroidered and you can see the Sega logo, classic Sonic & the Sonic&Knuckles symbol. But they're all universal, so that's no hint on where these could be bought.