what was the temperature there at the time?
had the camera been running in the car or that is just from when you arrived/were leaving?
could be overheating, how is the focus normally when you're driving?
you can't change it in settings, memory card won't cause this either
what did it look like when cold?
The same,the left side video is blurry. I ll upload video.
if it's blurry when cold it's a hardware problem, talk to the seller about getting it replaced