I've towed my minivan behind the motor home we used to have. I've never seen nor heard of anyone towing a VW bus. The bus is narrow which ads to its top heaviness. If you do pull it, please take pictures -- I would love to see the combination.
2009 Palomino Stampede S195 SD (Hybrid TT)
2010 Ford E-350 Super Duty XLT Extended
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