Everyone seems to be praising Rocky Mountain Construction for inventing the Hybrid Coaster concept (steel track, wood supports) with coasters like Iron Rattler and New Texas Giant, but when you look carefully at the history of coasters, Arrow Dynamics was the first to do this with Runaway Mine Train at Six Flags over Texas in 1966, and then Cedar Creek Mine Ride at Cedar Point in 1969, and although they are kiddy coasters, they still count. In 1980, they made a thrilling hybrid coaster with Gemini. Excalibur at Valleyfair, while not as well known, is also in this category. RMC's hybrid coasters are definitely better than Arrow's, but still, I feel that Arrow Dynamics deserves credit for inventing the concept. Your thoughts?