Although I have a nice road bike and a great mountain bike, I use my trike (TRuck biKE) 95% of the time, to go shopping, to meetings, anywhere around town or the vicinity. An 18 speed with a rugged frame and gets me anywhere via the gouged up streets of Waukesha or back trails, over curbs and up hills. I can throw some tools in the baskets, or a bone for the local dog, or fill them with groceries while keeping the center of gravity low and stable.
Hiatus Interruptus #2:
8 hours ago