Best practices dictate that the number of passengers be limited to the number of working seat belts in the vehicle.
in single cab pick up trucks 2 but in a car only 1
200
403
2200 I'm sure
Over 300
2, 228, including the crew
eight people
you have to dis-engage the passangers door lock with car off.
2 if you count the pilot
it was designed to have 7000 passengers.
It would raise the center of gravity and make the bus less stable.
As many as the car is designed to take.