Mike Chiavetta's 1920's board track racer Henderson made it into a feature placement in Hot Rod magazines Sept 2012 issue

the tires are just new beach cruiser tires from a swap meet

 the sprocket covers and gas tank are carbon fiber, because the profession of Mike is that of an engineer at Boeing

 the photo below shows a leather seat in close detail, it was formerly a suitcase that his childhood artwork was kept.

there is about $150 bucks total into this, and it can be licensed as a bike that can be pedaled and not run over 30 mph, for 20 bucks