Liability. The first time I was knocked unconscious was from treating real life go karting like Mario Kart. I'm guessing you want items which could really only have the effect of locking a Kart down for a period of time, that's some whiplash right there unless it comes to a gradual stop which is hard to do.
If it's easy enough that they can do it on limited run of toys, why not just slap the tech a set of real go karts?
Liability. The first time I was knocked unconscious was from treating real life go karting like Mario Kart. I'm guessing you want items which could really only have the effect of locking a Kart down for a period of time, that's some whiplash right there unless it comes to a gradual stop which is hard to do.
I want real F Zero racing instead.