What do a DeLorean, a flux capacitor and Washington’s Centennial Fountain have in common? They will all be in Washington’s Central park for the final Movie on Main Street event of the season tonight. Tonight’s the feature film is Back to the Future, which hit theaters 30 years ago. Families are invited downtown for the free movie tonight. Sarah Sadrakula, director of Main Street Washington, explains the movie will be shown on the band stand. Attendees are encouraged to bring chairs or blankets to sit on. The movie starts at 8:30 p.m., but Sadrakula recommends coming ahead of time to find a spot and get concessions.