Trucks. They're what's for dinner. And breakfast, and lunch, and that meal that comes after last call at Frankford Hall when only a basket of hot fried... well, anything... will do. But how do you know if you'll be chasing suds with street eats and not chasing your favorite mobile Brazilian steakhouse down the block? With our guide to finding the best curbside grub day and night, from Temple to the Navy Yard.