Things get rolling at Roli Roti, a mobile truck in San Francisco, California with a built in chicken and pork rotisserie, which serves up succulent sandwiches topped with “ crispy skin.” For meatballs with an international appeal, folks flock to Great Balls on Tires in Los Angeles, California. Next we head to Rebel Heroes, a mobile truck in Washington, DC which serves Vietnamese-Cuban inspired banh mi sandwiches by a mom and daughter team. And in Philadelphia, Pennsylvania, La Dominique Creperie is a mobile cart serving sweet and savory French-style, thin battered crepes – with an artist’ s touch.