The Middle piece is a Loft Nurb and can be modified to lower or increase polygon structure and count. The count of this object isn't part of the polygon count information on the model because it is still manipulatable.
I hope whoever gets this model finds a great use for it, I made it in my spare time waiting for the food to finish cooking, I named the wheels Vienos because I was relaxed when making them, added an S to the end of the name to give it a sporty edge.
Enough about me, Anyway Thankyou for visiting, Take care now.