My wife and I each scored $1200 vouchers last year when AA was needing 19 people to get off the plane (they had almost finished boarding before they realized there was a problem). This was a flight from CLT -> AUS. AA was going to put us in a hotel overnight and we were supposed to be booked on the first flight the next day but we were able to get on a flight that evening to San Antonio instead and found a $60 one way rental car and just drove from San Antonio to Austin. Got to Austin about 3 hours later than we would have.