The Sleuth has uncovered some heretofore secret intel concerning the 10-speed automatic transmission that was jointly developed by General Motors and Ford. That unit was originally intended for use in both automakers’ full-size pickups, but Chevrolet has decided that it will be available in the 640-horsepower 2017 Camaro ZL1. Not to be outdone, word is that Ford will also make the 10-speed an option for the Mustang GT’s 5.0-liter V-8 and possibly the Shelby GT350 model with its 5.2. It seems the automatic is capable of producing ultra-quick shift changes, and quicker apparently than Porsche’s paddle-shift PDK unit. That makes it ideal for track use as well as for helping to reduce fuel consumption in everyday use. The Spy Guy expects that the joint-venture automatic won’t be available until the 2018 model year.