I get frazzled and stressed out in heavy traffic. I can manage it, but it is an overstimulation that ruins my day. I need lots of "quiet" to get myself re-ordered. I don't know what I'd do if I had to deal with that every morning on the way to work.
Thankfully, I live in the country and work mostly at home.
I love driving on country roads, especially at night when no one is around. I really can't stand it when I have someone behind me, same as when I am walking. I feel like I can't go at my own pace and enjoy the scenery or my own thoughts.
My husband and I will sometimes go on "driving dates", where we just drive along scenic roads and chat. (He does the driving.) My autistic uncle used to ask to "go on a ride". There's something very soothing about being in a car. However, if I am not driving myself or actively in a conversation, I fall asleep quickly no matter how rested I am.