There are tricycles built on bicycle principles that avoid the balance problem--as I'm sure you know.
Another issue is "what about cold in winter and hot in summer?" An obvious solution: Covered bike paths. Lots less expensive than streets...
the roads were snowy, the weather crisp (translate: friggin' cold) and it was incredible! in my healthier days (pre two episodes broken back and one car wreck with permanent c6/t1 nerve damage, i loved biking. if i were physically capable now, i would still love to bike path it - actually went to get my bike back on road several years ago, but someone rearended the rv and bent the wheel - looking back, probably a VERY good thing...
for the young, for the fit - it is incredible. for those with safe places to ride, awesome - for those confined to areas where roads aren't friendly to cyclists, it is a damned shame.
i would love to bike around europe - my sister did it and had a ball - but for biking around california - i prefer having a bradley - it is a wee bit safer!
