I still don't understand why this isn't treated as a national security threat. If X bad guy wanted to do devastating damage to the US Economy during a wartime s

I still don't understand why this isn't treated as a national security threat. If X bad guy wanted to do devastating damage to the US Economy during a wartime situation, even a day "burb" in transportation would swing the tide of a war, let alone permanently disabling thousands of workers from getting to their jobs. Cell connected vehicles are unnecessary and a danger for so many reasons.