A new business is brewing

The rich aroma of coffee fills the air as Heather and Wally Wilson begin a morning of work - steaming milk, grinding coffee beans and measuring shots of vanilla and hazelnut. Soon the couple emerge from a trailer parked on Fifth Avenue, their hands full with trays of coffee drinks. After delivering the beverages to a local business, the Wilsons hop into their old sport utility vehicle and head to their next stop, pulling a small white trailer with Wallygators Expresso stenciled boldly in green across its side.

"We're kind of hard to miss," Heather said Tuesday, about the coffee shop on wheels....