Once as a Bus Captain we were launching from LAS and were going to MEM as a sweep airplane. Got as far as Tulsa and got acars to go to Austin. Fine. Minute later got another acars message asking how much gas we had and could we make it back over to San Diego. Seems another bus had reverser problems. When checking in with LA center they asked us if we really came from Vegas via half way around the country. Our reply was yes we just wanted to get a look at the country side..........