Such potential was also noticed by aviation and automobile enthusiasts, who theorized that the radial engine would be useful in cars. After all, inline or v engines used to power cars have been ...

Back in April of 1969, Popular Mechanics wrote about a super secret Pontiac test car called the X-4 that used a radial engine to make 80 hp. That engine was slotted inside a 47-inch tall commuter car.

[Ian Jimmerson] has constructed a detailed model of a radial engine out of wood and MDF for an undisclosed reason. Rather than just delivering the wooden engine to wherever wood engines go ...