Where can a person buy a class 3 receiver hitch for a vanagon?  I've only seen class 1, which does not have the load capacity to carry 4 bikes.

  Date:    Sat, 4 Mar 2006 08:40:55 -0500
From:    Christopher Gronski <gronski@GMAIL.COM>
Subject: Re: Racks

I bought a trailer so I am going to sell my Yakima Full Swing 4. It
mounts on a rear 2" reciver hitch locks and carries four bikes. Best
of all it swings out of the way even fully loaded so you have access
to the rear hatch.

http://www.yakima.com/Product.aspx?id=3D30

Chris