Man taking pictures of me on 240

So around 4:30 pm today I was driving on 240 and this guy sped up to me and rolled down his window and then started taking pictures of me with a camera. I looked over and saw the camera pointed at me and got very uncomfortable so I looked away quickly and did not see him very well. He then slowed down for a few seconds then went speeding past me. He was driving a blue Ford Maverick truck. Anybody heard about this or had it happen to them?