[SeanLuke]

That's not what stability is. A stable bike is one in which the steering is stable and easily controlled at various speeds. It's a function of steering geometry and mechanical trail. And the Strida is among the very most unstable folders on the market.

Answer honestly. Would you ride the Strida downhill at a 30 degree incline with a serious curve at the bottom without using the brakes, like you would a mountain bike? How about at over 15 miles an hour [like a racing bike]? A good folder should be able to do both easily.

[jbaber]

I ride mine 2 miles a day, sometimes 3 based on a variable commute. Mine doesn't have gears or a spedometer so I can only say I am comfortable at the fastest speed I can pedal -- but it would feel unstable to go much faster, say, on a very steep hill.

I'm not trying to imply it feels like a weirdly shaped mountain bike. I'm saying it does its particular job very well. The seating position and narrow handlebars definitely preclude it doing anything other than getting you from the train station to work on urban streets.

I have a real bicycle, too for, well, actually riding a bicycle.