I had an hot car on an CI R46 last summer, all my 75FT hot car experiences have only happened on CI yard routes over the years, both R46 and R68/68A. Never had an hot 75 ft car on an Pikin or Concourse car. Still not as common as R62A hot cars, in my experience at least. R46 & R68 hot cars Happened a total of four to five times over the 25 years or so of riding the subway to me, 62As it happened so many times I lost count