T-28/T-95 super heavy Tank

The T28 Super Heavy Tank was an American heavily armored tank self-propelled gun designed for the United States Army during World War II. It was originally designed to be used to break through German defenses of the Siegfried Line, and was later considered as a possible participant in the planned invasion of the Japanese mainland.

The 100-ton vehicle was initially designated a heavy tank. It was re-designated as the 105 mm Gun Motor Carriage T95 in 1945, and then renamed in 1946 as the Super Heavy Tank T28.

Only two prototypes were built before the project was terminated. It was the heaviest tank the United States has ever manufactured.
https://en.wikipedia.org/wiki/T28_Super_Heavy_Tank

The M25 Tank Transporter (G160) was a combination 6x6 M26 armored heavy tank transporter/tank recovery tractor and companion 40-ton M15 trailer introduced into US Army service in Europe in 1944–45. Manufactured by Pacific Car & Foundry Co., it was a substantial upgrade over the Diamond T M19 transporter/trailer duo introduced in 1940.

Nicknamed the Dragon Wagon, it was replaced by the 10 ton 6x6 M123 semi-tractor beginning in 1955.
https://en.wikipedia.org/wiki/M25_Tank_Transporter