David Trachtenberg has come up with a mobile celebration of Americana, with a dizzying array of dogs to pay tribute to regional styles. You can go simple, such as a Manhattan, loaded with kraut, mustard and onion sauce, or over the top, like the Florida, wrapped in crisped bacon and topped with a fried egg and cheese sauce. The crunchy tater tots make a fun side. Wash it all down with a Dr. Brown’s cream soda, that great deli staple. Montgomery County.