With all the traffic in the city nowadays, it’s easy to understand why many folks would choose to get a motorbike instead of a car, after all, it’s much easier to move around in, and parking is less of an issue. To take the idea one step further, a designer has come up with a portable motorbike concept design, dubbed Monobike. It sports a compact design, and is powered by electrical engines which are capable of taking it up to a top speed of 180km/h. To make this zero-emission vehicle even more city-friendly, it can be parked vertically, ensuring there should be more than enough parking space for everybody.