simon fulmer and his girlfriend are heading to a store when they cross paths with an aggressive driver in a school zone. >> there was a purple truck that was following us, and she got pretty upset when i slowed down to 20 miles an hour. so i changed lanes. and she changed lanes. so i changed lanes again to get out of her way. and i think she thought that i was trying to block her from going around. >> fulmer says he isn't deliberately provoking the woman, but she's clearly upset and becomes more aggressive. >> she came to the side of the car, again, and threw a cup at the car. that's when i told my girlfriend, you know, call the police and tell them that there's a pretty serious person on the road with some road rage. >> akron police and fire. >> there is a dodge truck. it is purple. they just threw a drinking glass out of their car at my car. >> his girlfriend is on the phone and fulmer records the woman's next move with his cell phone. though police say you really shouldn't record and drive. >> sometimes the best proof of things is a video. the police had said that they were only abo