1.   Any tolls or other charges like those for extra luggage could be added to the total.

2.   But the summer crush of infrequent fliers, kids, strollers, extra luggage and occasional thunderstorms could test the system in new ways.

3.   But the summer crush of infrequent fliers, kids, strollers, extra luggage and occasional thunderstorms could test the retooled system in new ways.

4.   The back seat is a softly padded watermelon rack, a place for extra luggage.