The Downeaster is asking tourists traveling to popular Maine destinations to ditch the car and try the train. On Wednesday, the Downeaster launched the Discover Maine Pass, a cheap, multitrip ticket between six stations in southern Maine. Most of the Maine stations are within walking distance to a downtown or attractions, which makes the train a viable alternative to driving, said Downeaster Marketing Director Natalie Bogart in an interview. “We’ve seen ridership grow in general; the lion’s share of that are people riding to and from Boston, but we have seen intermittent travel grow, too,” Bogart said. The $19 Discover Maine Pass is good for 10 one-way trips over a seven-day period – $1.90 a ride. The pass covers trips to and from Wells, Saco, Old Orchard Beach, Portland, Freeport and Brunswick. The Downeaster has five round-trips a day between Portland and Boston North Station, three of which extend to Freeport and Brunswick. There are often empty seats between Maine legs of the trip, which means passengers with a pass can hop on and off, but also gives an opportunity to make the train some extra money, Bogart said. “There is space in the Maine stations; that is why we priced this pass at a low introductory rate to develop demand for intrastate travel,” she said.