Hi guys,
From my own experience & opinion, I think for offroad cars, gyros will have less impact. If one started from offroad then onroad, then a rate gyro with proper setting will help a bunch to 'smooth' out the steering. I tend to over react on the steering while doing the mini onroad because in offroad, there's not enough steering to go round.
For high speed straight line run shooting for top speed record, a gyro will be useful to keep the vehicle in a straight line I think.
As for using using a fast servo, I think it is not that necessary for onroad. I'm only using a cheap GWS analog servo & it works wonders already.
For going backwards, it will be a handful as the gyro will over exaggerate steering in reverse. That is true.
Regards,
Joe Ling
PS : ufos also benefit from gyros. Guess how many gyros is used to keep this thing afloat ?