A former race car manufacturing plant at Danbury Municipal Airport is drawing heavy attention after hitting the market for $4.5 million. The 21,000-square-foot site, once home to Scuderia Cameron Glickenhaus, includes private taxiway access, making it attractive for aviation, drone, or defense uses. Brokers say at least 15 showings have already taken place, with interest from both in- and out-of-state buyers.