An Austin late-night-eats go-to is turning off its ovens. Before there was Torchy's Tacos. Before there was Via 313. Before Aaron Franklin created a barbecue truck revolution, there was Roppolo's Pizza trailer in the Warehouse District. Marc Roppolo opened his food cart, which is now a trolley, amid the bar scene at Colorado and Fourth streets in 2003, at a time when he said there were fewer than 60 permitted mobile food vendors. That number has skyrocketed to over 1,000, and Roppolo's has held firm in a growing Warehouse District, fending off the Austin Warehouse District Association to remain on its spot downtown as new restaurants have popped up and skyscrapers and condos have surrounded it...