
That is a constantly moving truck! Actually, teh floor just moves below it, but it looks a LOT like a constantly moving truck. I plan to add little details later, some cars to drive up next ot it and shoot at it, so I can release it as a full map.
Oh and here's a picture of breen about to get hit:

I also have the spy hunter music on loop, just because it was my inspiration (No, my inspiration was NOT matrix)