The shared feeling among team members and organizers that nothing about today's event will be predictable helps fuel the excitement. "If anyone tells you they know what's going to happen, they're lying," says Norman Whitaker, the Urban Challenge program manager. "Sometimes the robots will decide to go off on some road that we didn't even know they knew about. This is also the first chance the robots have had to interact with one another, and we're cautiously optimistic that they'll behave well together." He warns that the race could have an anticlimactic ending, since the first vehicle to complete the course will not necessarily be the winner. Finishing time will be taken into account, but points will be deducted for infractions like running stop signs and veering off the prescribed route.