That's one calm crack-up
In the scene in which Hammond, his driver and the Secret Service guys wreck, as the car careens out of control, the occupants look no more disturbed and distressed than they would if they were sightseeing. They seem more curious than terrified, as if thinking "Hey, is that a toll booth up ahead?"
No particular significance, just found it amusing. Film must have been threatening to go over budget when they shot that scene. "1 take, print it!"