I saw these a couple of years ago, but couldn't find anything online when searching for "tobots".
There is a shop in Eastwood (NSW) which sells them. Not sure of the price though...
I happen to stumble into this shop in Eastwood over the weekend as well. Not sure how much they cost as there are no price tags and I didnt ask for it.
https://www.youtube.com/watch?v=00y6-R6czVg
does the main car have some sort of air brakes? How can he stop vertacilly? haha.