Want WiFi in your Vanagon? Most people just carry an EVDO card from Sprint or Clearwire. These guys installed a Cradlepoint wireless router in the glove box, and permanently mounted a USB port in the dashboard of their Volkswagen Vanagon. Now they have WiFi in to share with everyone.
If you want to see how they did it, click the link below for the play by play. You can also see some favorite Vanagons.