There are already bumpers on the ends of the vehicle trains, but unfortunately people refuse to follow basic instructions to remain seated, so when a bump does occur someone falls and calls a lawyer. It’s an unfortunate result of our ‘no personal responsibility’ culture so Disney, now that they’ve been ‘made aware of the danger’ must prevent it or risk getting sued every single time it happens, which has been multiple times a day in recent years. Even though the frequency of it has increased dramatically due to guest behavior, the ambulance chasing lawyers will be all but waiting in line trying to catch the next one ‘injured’ to file the next negligence suit.