I like the concept, location, props, and the lighting that's there. However, to me, it's missing something. In my opinion, it needed some light on the right side of the image. What kind of light? Well, either 1) a light shining down the road/alleyway to give separation, 2) a rim light on the back of the truck to match the rim on the driver's head (I think leaving the gridded light on him un-gridded but placed a little further back/behind the car might have done it), or 3) a touch of light in the cab of the truck, or a combination of all three.

I mean, there is a light above the truck (on the wall) that could have easily been the motivation behind illuminating a bit of the scene behind the truck. It wouldn't have even needed to be a lot of light; just a touch would have brought detail into the scene that added to the overall effect, yet not take away from the focus on the bride.