Glad to know I'm not the only who saw how unsafe that is! In the event of accident, those bungee cords aren't going to hold to car seat to the bus seat and then you've got a projectile child & seat, which could seriously harm the child.
I know on DLE (
Disneyland Resort Express) - which is a Greyhound bus, they won't let you use a car seat at all because there is no safe way to attach it! They do have children sit just sit on the seats. The same happened to us when we took a shuttle bus that size from the Spokane airport into Idaho. Whether buses should have seat belts is an entirely different conversation, but as they are now, they don't & there isn't a safe way to connect a car seat.