@Edwin085 @frankiesaxx I'm inclined to guess China. On the blue sign at the entrance, the top row might consist of chinese letters. Also, sometimes a red flag(?) on top of the dashboard comes into view; near the end some yellow stars are recognizeable on it; might be the chinese flag. And the road signs do look similar enough to the chinese design, except that the direction signs inside the tunnel are black/white instead of blue/white. (https://en.m.wikipedia.org/wiki/Road_signs_in_China)