How to make Fire with an ALUMINIUM CAN

"How to start a fire with an aluminium soda can or beer tin or whatever. And the SUN, obviously. You can use all sorts of cool things as a rubbing paste to polish the bottom of the can. Like chocolate or toothpaste. In a survival situation, it would depend on what you had to hand. In truth, you don't NEED anything as a rubbing compound, it just speeds things up. You could simply use your T-shirt, saliva, elbow grease and patience..."

Original source: http://www.youtube.com/user/ROBwithaB?v=4iwrPKVuoTQ