I'm having the same problem. I'm currently playing with the 1.06 version of the game, on PC.
Edit: after I read another post about this bug (I forgot where I saw it sorry), I loaded an older save file in which the side quest "Epistrophy : Badlands" isn't the last quest to do before returning to the Delamian HQ. It seems that this specific part of this side quest needs to be completed before the end of the quest, meaning you need to be able to find other cars after having completed Epistrophy : Badlands. I lost about 2 hours of gameplay doing so, but so far, that bug is gone.