I'm also surprised by how often this issue comes up. To use an example other than buses -- many ski lifts and gondolas are designed to take 10-15 minutes, but i

I'm also surprised by how often this issue comes up. To use an example other than buses -- many ski lifts and gondolas are designed to take 10-15 minutes, but it's not unusual to be on one for over 30 minutes when there's heavy wind or a mechanical problem. They are also quite difficult to evacuate.