Wanted to post more for any car/motion sickness sufferers. Before we went I didn’t know what to expect. I’d read posts about car sickness with all the switchbacks, and also the possibility of difficulty breathing at the top due to the altitude. I was a bit nervous when we set off because of these posts but I needn’t have been. The whole experience was amazing - didn’t suffer one little bit of car sickness (sitting front seat passenger) and although it was cooler and windy at the top, the altitude was no issue at all. We went up for sunset and it was a beautiful sight, well worth the drive. Yes it did get colder sitting in one place watching the sunset for an hour, but certainly in September it was nothing a pair of long trousers, hoodie and blanket from the apartment couldn’t cope with. If you’re nervous, don’t be .. do it!