Lucky Charms!

Last night, actually, early this morning, I found myself inside a parked city bus, which started rolling slowly toward the cross street, the driver nowhere to be seen, on his seat a large box of breakfast cereal.   I walked forward following another tall fellow (the shifting of bus' center of gravity might have been the cause of the roll), squeezed into the driver's seat pushing the cereal box aside, and looked for the hand brake, while the bus was already entering the cross street. Not finding a hand brake I pressed the left pedal which I assumed to be the brake and the bus stopped.  The other fellow was already outside, standing in front of the bus.  I then released the brake and the bus rolled backwards a few yards, its cabin resting against the wall.  I got up, leaving the cereal box behind me on the driver seat.