ORIGINAL: dacaur
One of the RC mags had a story of a car with such a system... Basically just a pump and small reservoir, with copper tubing wrapped around the motor, then to the front of the car where the tubing was just coiled around a few times for a "radiator" apparently the system worked pretty good....
Yeh seen that too it was a Kyosho Inferno GT Aston Martin DBR9 the setup system was amazing and it worked pretty good too