Ghost cars

Why do I see these “ghost cars” all the time? They’re usually driving crazy and they have name tags on them. What are they?

If in free roam, then other players.
Well goes the same for races …

Depends on what you mean by “driving crazy”. I sometimes see cars glitching all over the place, including flying off into the air, driving through walls across the course and twitching around like bad ai’s with a severe virus infection. I used to think it was just my ISP lagging, but after checking several times, my ISP is working fine, yet the glitchies still do their glitching thing. Plus, I only notice this in Horizon and no other game.
I pretty much just let them glitch off in front so they don’t distract my own driving, they eventually crash out of the game anyway.