In the book, "Travels with Charley", by John Steinbeck, he describes a
clothes washing system he used in his pickup-camper, and I think that
somebody here may find it works for them and their Westy, too.

What John did was get a plastic trash bin, and fill it partway with water,
throw in his clothes, and some washing soap.

At the end of a day's drive, he found that the constant agitation caused by
the movement of the van, had completely washed his clothes. Then he would
rinse them out, and hang'em to dry.

I guess as long as you weren't hauling 40 litres of water around, and could
keep the bin from spilling, it would work for us too. In my minds eye, I can
see the consequences of using too much soap, however.

On a personal note, it does seem that there is no aspect of life or living
that doesn't have a Westie connection somehow, for better or worse.

Marshall Ruskin
84 Westy "Iron Igloo"
Founding Member of "Vanagon's Anonymous"