Dahon Vertical Folding Bike. We'll assume you're ok with this, but you can opt-out if you wish. Small enough to fit under a train seat and big enough to fill your ambitions of freedom.
Hon, a former laser physicist, and is headquartered in Los Angeles, California, with assembly factories in China, Macau and Bulgaria.
This bike model is a truly fantastic value for money, capable of functioning with exceptional efficiency not only through an urban landscape but also anywhere off-road too.
All in all, the Dahon Jifo Uno is an affordable folding bike with a vertical folding hinge. Gardener Goes from Pedal to Petal. So you'll surely find the Folding Bike by Dahon you're looking for.