Here you go Arni.
I'll not put too many to clutter up the thread but these should give you an idea.
The tyres are the old Italeri hard plastic ones from the accessories kit that I sanded down smooth.
Apparently the real one runs on slicks that have been "sanded down" to leave the bare minimum of rubber on them as it has a tendency to depart from the canvas at those high speeds.
The engines are scratch built from various pieces of plastic pipe with a bit of copper added for rigidity.
The frame is just made from various Evergreen strips.
As I said before, I scaled it up from an old 1/32nd scale kit so it probably isn't 100% accurate but it was fun to make.
Hope this helps.