You could find them in North Dartmouth, Fall River, Fairhaven and Taunton, but now there is a brand new Taco Bell in New Bedford.  It opened Wednesday at Riverside Landing near Market Basket, just off the Coggeshall Street exit of I-195.   The new Taco Bell has inside seating for 50 people, and a drive-thru that is open until 3 a.m.