Car sideswiped me on highway and sped off - what to do?J

I was going 65 on the highway and a car on the lane next to me decided to merge into my lane. I passed the car but not before they hit the right side/back of my car (not sure where because I don't have a dashcam) and then changed lanes and sped off. I heard a loud soud, clearly felt the impact of my car shaking but I haven't been able to find any visible damage on my car and obviously don't have the other drivers info.

Is there anything I can do in this situation?