Was speeding(everyone does it intentionally or unintentionally) but this driver kept merging lanes. I observed the driver swapping lanes very close as if he/she wanted someone to crash into them for insurance fraud? Anyways the roads were clear but the driver did said t repeatedly. I accelerated after the car and caught it's license plate. I saw it pull into a left turn lane on 252 but looking at my rearview, saw the car turn right back onto the highway(252) following me. Unfortunately it kept it's distance too far and I lost sight of it. Just thought I'd let everyone know NOT to hesitate to call the police on this car as I should have done(didn't want to talk and drive irresponsibly).