I work for a company of under 100 employees in a small city. Our head IT guy bought a Flipper Zero with his own money so he could make sure our building key fobs couldn't be easily copied.
If this guy can do it, I think the bajillion dollar auto industry can figure out a solution!
A single guy does not have 3 layers of managers and bosses above him, who have "better ideas", costscutting policies and "i have no idea what you just explained to me, so lets just not do it!".