Really this in the forest

When I was driving for some time I started feeling that something is not right. While looking in mirrors I could see that all is good but at one point when I could see that someone started flashing lights I moved on the side and then I could see that they are points on the back when they were an on side of me. While seeing it I nodded to them and when I drove on the side, I said: "how long to the mechanic".

"What happened," Sophia asked.