  Traveling veggie  Barb Beck had some neat ideas for traveling
by car. She suggested carrying lots of canned beans for salads,
and stopping for fresh fruits.  Dixie Diners (800) 233-3668 (I
have no connection with them), has a mail order catalog for many
food items that come in little bags but do not need to be
refrigerated. Most are soy based products. They have the ease of
being able to be reconstituted with a little hot water. Most
helpful, until they are reconstituted they last almost forever,
and would be  safe completely unrefrigerated. But as soon as you
mix them with water, you have to keep them cool.   I'd also
suggest a multi-level steamer that you can prepare rice,
potatoes, and fresh vegetables in a motel room. You can eat
right out of the trays, and use paper plates and paper
silverware. A steamer is easy to clean since nothing sticks to
it. Most steamers have timers that you can leave alone that will
turn off in an hour. Also, they  usually will turn off
automatically when they run out of water