Ignoring the half full or empty busses going around here...
It takes up a dual carriageway. The film shows the bus turning a corner but it has car access underneath. What if the car is expecting to go straight ? It shows folk going up and down in a central lift, but that implies they are landing in the road where the cars are going underneath. And it's evacuation system shows the sides coming down and potentially hitting cars. This is a college student's project fantasy vehicle surely ?