I love road trips, the longer the better. It is an experience so rarely shared between friends and strangers these days - when you are forced into a small compartment and have no option but to find means of entertaining each other through conversation. Road trips are where relationships are made and friends discover new things about each other. And they are infinitely more entertaining than an airplane ride - you get to see so much, with the freedom to stop and gander at new and previously found beauties.
I think I would like train rides in Europe too.