Outriders Diner was built by Kullman in 1937. It was demolished in 1999.
It was located at 9855 Washington Blvd. (Rt. 1) and Whisky Bottom Road, in North Laurel. It was attached to a bar, similar to the setup just down the road at the Tastee Diner (formerly the Laurel Diner).
The setup of the diner is interesting, with the door at the end, by the glass brick corner. The door is flanked by a glass brick “delete” panel, keeping the window grid even. The fabric awning was replaced with a metal one sometime in the 1950s, and a vestibule was added, much more in keeping with the style (lack of style?) of the addition, than the diner.
Diner Hunter 
The info above says Outriders was torn down in 1999. The building that stands on the spot now was built in 1985, I don’t know what year they tore Outriders down but it was pre 1985.
That date certainly makes more sense- I have newspaper clippings, etc. going up through the mid 1980s, but nothing after that. The 1999 date came from an article in the Baltimore Sun about the diner and its former owner.