MTA
n.— «Is it true that you’re going the MTA route (model-turned-actor)?» —“Signs of Life: Cameron Alborzian” Observer (U.K.) Nov. 28, 1993. (source: Double-Tongued Dictionary)
fast line n.— «Fast line—Quickest route around the oval and could be on the outside or inside of the track depending on conditions. This also is called the “groove” or “sweet spot.”» —“Learning the Lernerville lingo” by Paul Kogut Valley News...
groove n.— «“The Groove”—Slang term for the best route around the racetrack. Drivers appreciate ovals that offer more than one groove, but a few years typically are needed before a new track develops multiple lines that can promote side-by-side...