1. Build Your Own Porsche An engineer who so desperately wanted to drive the latest Porsche 911 GT3 RS but never had the opportunity because of its 150K price tag resorted to building one himself. Using his technical knowledge on cars and employing such household materials including packing tape, card-board, kitchen foil, torch and stretch filmandspending a mere $200, he finally built his own roadworthy Porsche. Looking at its exterior, car is almost identical to Porsche 911 GT3 and it is driven by using simple mechanism found in normal bicycles. Here's the step by step photo story of the world's cheapest Porsche.