My biggest fear is a road trip. Sitting in a cramped space for eight million hours, only getting to take a pee twice a day and never when you need to, either in awkward silence, an annoying conversation, or listening to something only one of the people wants to listen to... God, it's scary. You can read "Take a Long Drive To Somewhere You Don't Know, And Take Someone With You" by PapierSam here: https://www.fimfiction.net/story/436989/take-a-long-drive-to-somewhere-you-dont-know-and-take-someone-with-you