When I wrote about the hamburgers at Kincaid’s in Fort Worth recently, I was slammed with comments about other burger joints in the area – most notably, Dallas’ newest, Maple & Motor. Open just a year, in an old taqueria on Maple Ave. across from Elliott’s Hardware, M&M’s brisket/chuck half-pounders had already achieved legendary status among the Dallas burgerati, and lines out the door into the parking lot were common, I’d heard.