Ok, the sources for the rubber barn mat material I used in my van: Any
large ranch supply store or Tack shop.   I am told most large
farm/ranch/equine sports retailers have it, in different sizes.  It is heavy
enough that you might want to pick it up in person rather than
shipping..Might be a bit difficult to pack up for shipping too.  I think M.
got the stuff we have on Hwy 97 Redmond/Bend Oregon.
  Don Hanson