The Chevrolet El Camino SS Choo Choo package earned its odd nickname somewhere along the way, and by 1987, the very last year Chevrolet built an El Camino at all, buyers had one final chance to check that option box. Only 861 of these were built in that final model year, out of roughly 4,950 total across the package’s entire run. Here is what made this quirky appearance package a genuine send-off for one of Chevrolet’s most unusual nameplates.