The Coast Guard’s “Invader Jeep” (with photos here and photos/article/film here) was apparently also called the “Miracle Jeep”. The designer was Chief Petty Officer Charles D. Benjamin.

For starters, this short news reel clip has a reference to it in the Descriptive Log as a Miracle Jeep: https://www.historicfilms.com/tapes/14555_1773.97_1798 . Here’s a screen shot:

The March 18, 1944, issue of the Dayton Herald refers to the Coast Guard Super jeep as a “Miracle Jeep” as well:

The June 25, 1944, issue of the Indianapolis Star also refers to the jeep as the “Miracle Jeep”.