Jeb, I don't know that any course is enhanced in a cart. I can always gain better knowledge of a course by walking it. I see more and get a much better look at the architecture.
But not every round of golf is about fully experiencing a course or getting in tune with nature. While that's definitely one of the things that separates great design from good, mediocre, or bad, it's not always the point. Sometimes, it's just about relaxing and having a good time with your buddies for a few hours.
I still play plenty of golf with people who couldn't even misidentify a Cape hole, and those rounds are some of the most fun I have even though they're usually on mediocre courses and the golf itself is usually pretty unmemorable. A round of golf can be a lot of different things, and a cart isn't always a detriment. If you're drinking a case of beer (or Capri Sun) and having pizza delivered to the clubhouse at the turn, a cart helps a lot. And if I ever want to play with my 80 year old grandfather who is on his third shoulder, third knee, third humerus, and second heart, a cart is a necessity. In the latter case we'll probably also be playing a $10 executive course, and it won't feel any less special than the stroll I took a few months ago as the first group off at Pinehurst #2.