In NASCAR, they still use a Steel Wheel
Some Race Series have even experimented in Carbon Fiber or Carbon Kevlar Wheels
The wheel was invented because people realized it is easier to move heavy objects when something rounded (like logs) were put under it and they rolled it to its destination.
Wood
Most are made in factories.
Nomex(fire retardent material)
play do/ legos
Things on Wheels Launch Trailer
Custom Made Sprint Cars
Understanding the Features of Vehicles Made After 2002
Understanding Vehicle Features Made Between 1996 and 2002