How can you not love a place that’s making a difference on, with and for two wheels? Located in lower Midtown — still the Cass Corridor to many — the Hub is a retailer, a repair shop and an advocacy organization. Drop off your gently used bike parts — come on, do you really need all those sprockets? — and shop for new stuff. Or just make a donation so the Hub so its partner, Back Alley Bikes, can continue teaching kids how to fix bikes and to help with Detroit’s growing cycling community.