Wraps, even at that size are fairly cheap and easy to put on and replace as needed. There's a reason most racing teams ( car and motorcycle) use them, it's easy to keep in stock, relatively easy and quicker to apply than a custom paint job. And they are rather durable to small road debris. More so than paint generally is.Easy huh? There is a lot more to it then that. They haven't even been able to keep the Monorails looking like new and they don't usually run into anything or be run into. Yes, the are wrap graphics, but, if a minor accident happens they aren't going to wait for a matching section to be made up, shipped and applied. They have a choice of either leaving that damage there and operating the bus until a new one arrives or matching paint and touching it up. Obviously, if there is major damage and they have to replace an entire panel or two, then that wouldn't work. Either way, it is major expense and man power to put them back to being presentable again. The Gondola are not liable to hit anything except the occasional drunken bird.