We had a couple weeks free time at work, here is what I got paid to build :
I constructed the frames out of mild steel, they are powdercoated black
The steering wheel/pedal/shifter sets are Logitech G25's
To make it easy to get in and out of the chairs, I made it so that there is a hinge and latch assembly that allows the steering wheel support bar to swing out of the way
The pedal plate folds up so that the chair can be tilted back and easily moved
Final shot