Does having two speeds justifies the higher cost and weight of the dual-speed model? I was just investigating and it appears I could get a single-speed CarryMe for $450 (including shipping), where as the dual-speed is almost $900. That's a huge price leap.
Also, does anyone in the NYC area ride a CarryMe (single- or dual-speed)? If so, PM me; I'd like to try one out. Thanks!