In Reply to: If I recall Buick invented the slushbox... posted by SL on April 05, 1999 at 07:57:40:
slushbox almost 10 years before Buick came up with the Dynaflow. I am not absolutely positive, but I believe Olds had their first automatic in 1939. Chrysler and a semi-automatic in 1946 if not earlier.
Buick started around 48 or 49 as I recall.