Read Immediatly Please!!!!!!!! I'm Freaking Out!!!

[CHEVY & GMC FOREVER]

As some of you may know I recently bought a 1969 Chevrolet CST-10 pick up truck. I live in a pretty nice town of New Lenox, IL, but there is something wierd happening, I usually leave the 69' Chevy outside and whenever I do this guy in this red caviler drives up stops looks around and takes a picture (of my truck) then drives away. I don't know what to think could he be just some guy who likes trucks and needs to have a collection of photographs for his amusement, or could he be planing to steal it or something?. HELP!!!!