It did n't look like a 'move" so much as as a manouvre.. as the car slowed when they saw the bikes - got all skeered...
Anyone going through the canyons needs to know its a race track,a nd rul fo the race track is "Slow traffick stick to your line and don't worry about the fast guys - they will find a way round you - if you dont make a bone head move

"
Then again - those yahoos were looking for trouble making their "GhostRider Movie' in such heavy traffic