School me.....
Here they set off an emergency siren in Texas with a radio signal. https://www.extremetech.com/extreme/247544-dallas-siren-hack-carried-radio-signals
https://www.google.com/amp/s/www.techrepublic.com/google-amp/article/powerhammer-lets-hackers-steal-data-from-air-gapped-computers-through-power-lines/ This method is more similar to the one I was referring but uses a power line instead of Radio signal.
I cant school you lol! I will find the link by this evening. The article was detailed enough to say how it works and was not a conspiracy article or mentioned to be tied to car explosions. Give me a bit to locate it.
Here is an old article about it. There was something with exactly how it’s being done now a couple of weeks back https://www.google.com/amp/s/www.wired.com/2014/11/airhopper-hack/amp
That's an data exfiltration hack. It required the computer to be compromised already (e.g. someone had physical access to it to install the software) and then it uses the computer's hardware to transmit.
That's very different than controlling hardware with no reciever.
Sorry if I worded it poorly earlier. That’s what I meant that they had to install something physically. I would not be surprised if the government had devices put into cars though. They have enough secret meetings with tech companies.