I saw this article recently http://arabnews.com/saudiarabia/article532400.ece.
It reminded me that although we here at Barre Army Navy Store live here in a cold, wet place with it's own survival challenges. We do not talk much about survival in a desert environment. There are several excellent tips in the article. The first is the if you are riding in a car in a desert environment and you are lost or stranded the car may be your greatest survival tool immediately at your disposal:
1. As a source of shade. The author says dig a hole and make it your home. For all us un-dingo dogs that goes against our need for movement but it makes sense. Sun saps you of your strength and ability to think clearly.
2. There are several unclean or unfiltered sources of water with in the car. Your radiator and possibly washer fluid (although many of us are more likely to have toxic fluid in our window washer tank).
3. Tires and the car can be burned a signal. The author cautions against burning inflated tires and explosions.
The other great advice in the article is about not panicking and about your food and water situation. People can survive many days without food and less time with out water but water should be used only sparingly unless absolutely needed and there are ways to control body temps and breathing to limit evaporation from your body.
No deserts here but if you are looking for survival supplies or water containers see Barre Army Navy Store http://www.vtarmynavy.com/