I posted years ago about the Sizaire-Berwick luxury car, but didn't learn about the WW1 armored car they made with a propeller (Thanks George!)

The Sizaire-Berwick's Armored Car was an Anglo-French lightly armored military vehicle that was originally designed for combat in arid desert regions during the start of World War 1. Comprised of a civilian car body and outfitted with a giant plane propeller on the back, the Sizire-Berwick Armored Car was meant to glide over sandy terrain.

ecause of their need for a desert vehicle, The Royal Navy sought a design solution and placed a Sunbeam 110CV plane engine on the back of the chassis while adding some steel-plated armor on the front of the vehicle to protect the car's operators.

The thought was that the added plane engine could help propel the vehicle over the loose sands of the desert. However, rather unsurprisingly, because the chassis for the vehicle was not designed or graded for military use, there were many problems with the Sizaire-Berwick's Armored Wind Wagon, and the vehicle was never used in a real operation.

https://www.slashgear.com/1411026/weird-armored-car-ww1-sizaire-berwick-armored-car/

the post on the luxury version was https://justacarguy.blogspot.com/2020/02/and-now-for-something-little-different.html