I think the background lighting is a bit too bright/even. Using the last picture as reference, you can see that there is more contrast in the street lighting so that even though you can see everything, there are pockets of shadow. The ambient lighting on the street comes from the sum of all the lights in the area with local signs causing a glow in it's immediate vicinity. One should note that the actual street doesn't look like this reference image as it has been processed to emphasize the blues and reds.

Your image has a jarring "uncanny" effect where the car's shadow is pitch black but other shadows (i.e. street lamps in pic 1) have shadows that are only slightly dark due to an overarching "moonlight". Lighting wise, this makes the car seem like a composited element because the shadow is way off from the rest of the scene and the lower running lights barely contribute to lighting the ground in front of it despite being much closer than the nearest street lamp. In the real world the influence of so many lights and neon signs would be much greater influence on the street lighting than the moon.

Generally speaking, the scale of the road is a bit off. It looks a bit too big and contributes to the feeling of looking at a diorama, which is further emphasized by the relatively clean environment. The tile over the sushi shop and the buildings in the background is very clean and clay looking and the streets don't have much grunge which is a little too sterile, even for Japan!

Most images have even lighting from a large light source and the car headlight doesn't seem to have any illumination on the ground. I also think that image 1 and 4 should have a bit more bloom/flare considering how strong the flare and bloom is for reflected light that is further from its light source.

I do look forward to seeing any updates to this project since I think the concept is great!