So I've been thinking that aging boomers may want to try a tricycle. The risk of serious problems from "going down" becomes greater with old age. I don't want an 18 month recovery period after shattering my hip when I couldn't clip out at a traffic light (or even just losing balance with platform pedals and falling over). Not sure what that tricycle design should be. Those low ones seem too easy to get run over by an SUV. But I'd like to think I can cruise around the neighborhood (or retirement community, or whatever) even when I'm 75, or 85, or 95.