Check out this two-in-one concept designed by Believe. It is a folding bicycle which can also be used as a complete suitcase. Yes, this bike can be folded down into a suitcase within 10 seconds whenever you want it. This bike weighs 8 to 9 KG only. You can take it along with you easily while traveling because now you do not need to carry your luggage. Once you come out of airport, just transform your suitcase in a dork bike and simply ride home. This concept has already been brought into reality and is available for sale.