I will go along with the ban on Thunderslots and rely on the Slot.It and NSR cars with rules that are “open” for mods including 3D chassis, ball bearings and pretty high rpm motors in any orientation. In other words, like the real 1:1 cars could be ever increasing performance. Just mounting a Carrera, Scalextric, Slot.it or NSR body on a Thunderslot chassis might be going too far, but maybe;). NO 1:28 scale cars.