The work has started off by taking out the original radio and motor drive modules and the antenna from the car. I was left with two motors, one for steering and one for acceleration, and the plan was to rebuild the whole architecture using Arduinos. I succeeded and the motors are now driven with a powerful H-bridge module (L298n) and the wireless connection is handled by two nRF24l01 antennas. The Arduino and the motors are both powered from the original 6V battery pack (4xAA).
Besides the hardware hacking, I’m sure the tricky part is getting the on-board Arduino Nano to talk to the radio-connected Arduino Uno to then talk to the software stack who in turn needs to talk to the USB racing wheel. But if you check out the video, I think you can see how much it’s worth it. That looks like fun!