Bikes may partly fold and partly disassemble for packing into a standard or custom sized suitcase for air travel (e.g., Airnimal and Bike Friday). Other variations include: Bicycle Torque Coupling, a proprietary connector system that can be retrofitted to a standard frame; the Gekko, which folds from the seat tube like an upside down umbrella; the Giatex, which folds and retracts, adjusting to the size of the rider; the iXi, which literally breaks into two halves; and the Strida, which has a triangular frame and folds to resemble a unicycle.
"The bike has been a pleasure to ride and performs as well as most of my other road bikes - the shifting is exceptional. Since the Department of Transportation has moved out of our City Hall offices the Dahon has been a lifesaver as I use it downtown to get from meeting to meeting. I must admit I get far more looks from people on this bike, and more questions, than I ever have about any other bicycle I've owned. Which is great as use of the bicycle is what my job is all about."
Traditionally folding bikes are made with small wheels to make their foldability easy. Of course, models with small wheels tend to be lighter and gives you more portability. However, they may lack the ability to speed up. Foldable bikes with conventional size tires are much faster with rolling but their heavy load will give you a tough time while traveling through public transport.
The suspension works, but there isn’t any true dampening. That means you’re just riding around on springs. On a real full suspension e-bike (i.e. a few thousand dollars) you get actual oil-dampened shocks. Those absorb bumps and dampen the shock. With springs, the bike bounces a few times after bumps, with the energy dissipating through the spring stretching and compressing.