Train travel is great. High-speed rail is a wonderful way to travel. Air travel here is ok too. Security is usually far less aggravating than anything involving the TSA, and higher gas prices make it easier to justify the cost of a plane ticket. But if your destination is far enough outside the main rail network, and not far enough away from your origin to want to deal with the temporal overhead of flying, then it’s time for a drive.
Undoubtedly, America was built for road trips, and vice versa. I’ve enjoyed my share in my day, short, long, and multi-day. To be sure, they still have their place in Europe, but I have found that there are a number of factors which make them feel like more of an afterthought in the transportation network, a means to an end rather than something to enjoy in themselves.