I suggest in many ways you are right. BUT - cars will eventually be better than horses. Why? Because they have a) the tech is very specifically geared to do

I suggest in many ways you are right. BUT - cars will eventually be better than horses. Why? Because they have a) the tech is very specifically geared to do things related to driving and driving only b) it's not inclined to 'emotions' or 'spooking' and finally c) it has tech the horse cannot have - it will be able to see further out, communicate with other cars 'real time', it will be able to make crazy probabilistic calculations in real-time with respect to 'what best to do in a negative scenario'. I think it will take a long, long time to get through those corner cases, and probably a few disasters between now and then, but in 20 years maybe it will be crazy safe.