Most Wednesdays and Thursdays you can catch HEWTIN"S DOG MOBILE on the Roger Williams Memorial side of North Main at the foot of Howland Street (one tiny block beyond Bowen). People start to arrive at 11:30 and the truck stays until after 2:00. Fans come on foot and by car. The park provides the seating. The menu is a luscious list of porky sandwiches and hot dogs with the best relishes around.