https://www.cbsnews.com/news/darpa-dan-kaufman-internet-security-60-minutes/

While doing a DARPA dig, I ran across this is sauce from a "40 Minutes Plus Ads" Commie Broadcast System show in 2015 concerning DARPA. A significant part concerns hacking and controlling a car (although that's not really news to anyone). Made me think about the possible vehicle attack re POTUS motorcade outside Opelika, Alabama.

Newer model car? If so, driver may not have known. Left-handed attack by hack possible. It would also explain why the attempt took place in a location with a barrier - hacker wouldn't have known.