I'm travelling to the USA next week and was wondering if anyone could give me some information on the greyhound service from New York - Detroit in terms of how safe it is, is it comfortable and are the buses crowded? I'm Irish and I'm not used to travelling on long bus journies (the longest ive ever been on is 4 hours) - i know the schedule of the route and i know prices etc i just need to know general information on travelling on Greyhound in America. thanks for any help guys