When I was a kid we drove out to the west coast from Evanston Ill in 1964. We fished in Colorado and generally looked wide eyed as we crossed America. Then we came to the Great Salt Lake. I had seen lake Michigan, that wide body of water, this was different. It was salt water, and salt flats. As we came off the salt flats on the way to Reno, we climbed a slight hill. At the top of the hill was a motel on the outskirts of Wendover, with what looked like a jet fighter on a trailer.
It was overall grey and blue trim while my dad did not really see it, I was fascinated by it. I learned later it was the Spirit of America Jet Car, powered by a J47 engine out of an F-86. I was to see the Spirit again in 1986 in the Science and Industry Museum in Chicago Ill, as I was killing time before a deployment to Honduras, flying UH-1H Huey’s on “Operation Blazing Trails”, to build a road into the interior, and “bandit” country. But that’s another story.
Another of the "Jet Cars" was the Wingfoot Express II. Walt Arfons designed the car and Bobby Tatroe drove in 1965 to a speed of 406 MPH, the initial 15 JATO bottles (at around 1000 Lb. Thrust each) did not give the car enough thrust, and only propelled it to measly 406 MPH. In the next attempt they added 10 more bottles, for a combined 25,000 LB of thrust, and not inconsequentially $60,000 a run. It still was not enough to crack the 536.71 average speed measured on two runs. The crew wanted to launch the car vertically, but Goodyear said “NO!”. And the Wingfoot Express II faded into history.