In one of the early screenshots of GTA San Andreas, you can see that people appeared at the Wang Cars dealership. For unknown reasons, they were removed from the final version of the game. The script returns to the place of visitors to the car dealership.
Why were they removed?
According to my assumptions, due to the poor artificial intelligence of the game. Sometimes NPCs fall down stairs instead of going down them. I left it as is and did not try to fix this bug.