This begs the question:
        Why Bother?  If you're plugged in, you're obviously at a
campground or a friends house.
Something else to go wrong - take up valuable space - cost money -
tie you to civilization.

                                        David (dsl82westy)
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>I thought this inline electric water heater seemed interesting. You'd
>need to have your van plugged in though:
>
>http://www.audubonsupply.com/browse.cfm/4,125.html
>
>Chris