well, except for "holding a laptop", which is probably a requirement you'd be better without, What do you need screen, speakers, and keyboard on a moving RC car

well, except for "holding a laptop", which is probably a requirement you'd be better without, What do you need screen, speakers, and keyboard on a moving RC car for? something small like an Intel Compute Stick has nearly all the power of a laptop, but is very small and you can use remote desktop.