"Good guys" used a Hotrod or X-arcade to control a matchbox sized remote control car in bad chinese military base. I never knew remote control car control is digital

Watched Tom Cruise Collateral few days ago. Tom inserted an USB memory stick into diplay of GPS system of a Taxi. Yeah, sure he could watch the data easily. Maybe there's an XP with all possible programs at those devices, I doubt it though. It's allways easy in the movies to use computers, and everyone knows the programs and how they work...
BTW, Alias sucks.