Austrian artist Hannes Langeder is a very proud owner of a GT3 RS Porsche, although it could hardly race with even an ordinary bicycle on the street. That's because this world's slowest Porsche was handmade by Hannes using plastic pipes, sticky tape and aluminum foil, and instead of being powered by engine, it only runs as fast you pedal it! The eco-friendly car took the artist 6 months – over 10 000 hours – and 13 000 to euros to complete.