EXCLUSIVE: Charmed alums Shannen Doherty (Beverly Hills 90210) and Holly Marie Combs (Pretty Little Liars) are hitting the road in Great American Country’s Off The Map With Shannen & Holly. It follows the former Charmed co-stars and real-life friends on a girls’ road trip through the southeastern U.S., with stops in Kentucky, Tennessee, Mississippi, Alabama, Georgia and Florida. They will travel unknown roads, meet locals and tackle exciting adventures with help from Great American Country viewers. Visitors to GACTV.com can vote on the activities the pair will take on at each destination, with new questions rolling live as filming continues in July and August. The original six-episode series is slated to premiere in 2015.