When you drive the mainroad from Vybor to the south (to go to Zeleno) there is an invisible wall/ramp/obstacle and you will crash your car.

Its left from the Supermarket next to the fence in Pustoshka. It seems that the stonewall (bricks) has an displaced Collusion, or has a too big range. (Sorry for bad english)

Alternative you can go on Izurvive.com an hover your Mouse over the map till u hit the coordinates at (shown below on the map):
30.75 | 47.07 (somewhere at this area, i think you guys will find it ;) )

Screenshot is Attached

It exists since 2015. So when you next time Update the map... Just give it a chance to dissapear ;)