This is a very interesting shot, there is a lot going on, so the B&W helps bring it all together without distracting from the main subject. I'd like to see a change in the DOF, it would help take away the distracting background, and bring the attention more on the subject. The composition creates almost a frame around the wheel which is interesting, I would crop in on the right side slightly to get rid of the loose limbs (arm and leg).
Great scene you captured here. The lighting is great and subject stands out really well even with all the other people and objects in the picture. Great job dude!