>>149295631
You're probably thinking of Spy Changers from RID2001, who were just repaints of the G2 Gobots after Hasbro got the rights to that title

They were basically Hot Wheels cars who could transform, literally made so you could use them on your Hot Wheels tracks since like every kid had them back then, something you don't see a lot on the toy business. Of course when RID2001 came along, they like had autistic level of "the show designs must be just like the toys" so they literally made their characters made from these molds be mini bots, though not as mini as Minicons