"Nikola Tesla had an Electric Pierce Arrow back in 1930, the ICE engine was replaced with an Electric Motor. The power source was a black box of radio tubes, in the glove compartment. The box had an antenna sticking out."
http://waterpoweredcar.com/teslascar.html
"The operation of the Priore machine was seemingly incomprehensible. Many orthodox French scientists—some of them world renowned—were outraged at the success of such a machine, shrilling that science had nothing to do with "black boxes.""
https://theraphi.com.au/the-priore-healing-machine-and-phase-conjugation/
"Dr. Tesla stepped into the passenger side and began making adjustments on a “power receiver” which had been built directly into the dashboard.
The receiver, no larger than a short-wave radio of the day, used 12 special tubes, which Dr. Tesla brought with him in a box-like case.
Mr. Savo told Mr. Ahler that Dr. Tesla built the receiver in his hotel room, a device 2 feet in length, nearly 1 foot wide, a 1/2 foot high.
These curiously constructed tubes having been properly installed in their sockets, Dr. Tesla pushed in 2 contact rods and informed Mr. Savo that power was now available to drive."
https://stillnessinthestorm.com/2020/02/nikola-teslas-black-box-a-free-energy-device-that-powered-his-car/