1/6th Scale Ultimate Soldier Vehicles Fits GI Joe

These are all circa late 90s to the early 2000s. The first three were made by 21st Century Toys aka Ultimate Soldier. The last one is a Hasbro GI Joe vehicle.
Photo #1 is the Schwimmwagen which is an aquatic version of the VW bug with a machine gun. Dr Evil is riding in the back seat. Time to play in the tub.
Photo #2 is the Humvee. It was smaller than 1/6th scale but still made for the 1/6th scale figures. It went for about $50 and as the first of their vehicles I think they were trying to keep the cost down.
Photo #3 is the M5 Stuart tank. This time they went full scale and these sold for $200. To give you an idea of how big this is it takes up most of the room in a full sized trunk as see posted at CW.
#4 is a Hasbro GI Joe M8 Greyhound. Smaller than a tank but bigger than a jeep and still pretty big.
No clue what I will post tomorrow.