Something like this perhaps:

http://www.vanagon.com/info/vehicles/lightweight_syncro_16.html

________________________________
From: Marc Perdue <mcperdue@GMAIL.COM>

If you're going to re-do the interior, what about using materials
that would stand up to the kind of abuse our vans get, something
lighter too?  Granted, it would probably be cost-prohibitive, but what
about building the cabinets out of something like carbon fiber?
Thinner, lighter, stronger (more expensive) . . .  You could
conceivably gain slightly more space and lighten the van
significantly, yah?  Sure, it's kind of a crazy idea, but why not run
with the idea and see where it takes us?  What about other materials?
Any materials scientists on this list?  Other cabinet makers/craftsman
who have worked with unusual materials?  Is fiberglass too tacky, too
damageable?

Marc