1:36, i wonder if having the motors run the inner and outer track tires seperately what i mean is that instead of the motors driving front rear wheels, you could have the motors seperately drive left and right wheels, so that during turns you could get a differentiating output, though the guide roller wheels could help, this method could possibly keep the motor speed up without much resistance on exit to straight. you could also try having the thin wheels on the outside of the rim, so that during a turn, the body weight could put more load onto the ground. hoping to see more of these, it tickles my brain.