Algodoo

looks like its got some friction issues(you can't get a motor to accelerate that fast).
it isn't remote control at all some pseudo-remote controlled vehicles use scene.my variables as a means to transfer data, or even cheap motors controlled by the user and not by the control system.

i did try to make a truly remotely controlled machine(using a modified version of mori-d's GPS-ish system), but it had alot of interference and didn't work properly at long ranges.
another attempt was to make a satelite dish as a method to transfer data to the car itself. it gets quite hard to be done at longer ranges too.