When I tell people they can easily cook meals on their car engine as they drive along, I am frequently not believed. So I simply recommend the cookbook Manifold Destiny: The One! The Only! Guide to Cooking on Your Car Engine. The book is entertaining and it contains all the instructions you need to cook using your engine's heat while driving. (This fun yet wholly practical cookbook also comes in a Kindle edition.) If you try this method of cooking, please let me know how your car cuisine tasted.
NOTE: For those among you who are high-raw, this technique can make those small segments of your menus that are non-raw both convenient and delicious. Enjoy!
Note (added September 16, 2011): On a related topic: "Cook Breakfast in a Hotel Room with an Iron and Coffeemaker" (lifehacker).