1.   After Grand Central the car emptied, and I sat down and instinctively checked my trouser pocket for my wallet.

2.   But it does have trouble with variable weights, speeding up or sometimes just stopping as the car empties or fills.

3.   Once the car has emptied of passengers, the two make love right then and there.

4.   The cars emptied and the men opened fire with automatic weapons.

5.   The cars emptied and the men opened fire.