The really good stuff and a "rubber" type is the welt used on Volkswagons. You can get a pretty good size roll of it for around $20. Its very plyable and looks good...if you want black.
Friend of mine picked me up a roll from a dealer.


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile