Crikey!

How about just looking what texture files are used and then starting afresh.

I generally replace all chrome, glass, car paint, leather, plastic, steel and rubber materials with my own variants anyway. BB has free shaders for all that stuff - they might have more nodes than your model has polys, but they look decent and render pretty quick.

I am intrigued, what model is this? 

And how did it get past a quality control check?