Very nostalgic I remember the credit card machines on the aisle carts so you could buy the ticket on the plane. Just like on a train. I used to fly them when I was in college in the 80s. A couple of friends of mine sat out one day at OHare getting bumped five times in a row ended up with 5 free flight coupons each. They were the talk of the college back then, before the days of commercial internet etc.