An interesting read on physical car security for keyless entry and engine starts.
https://paigehai.github.io/blog/my-keyless-car-got-stolen-so-i-worked-out-how-they-did-it/
But I doubt that any of the current mitigation techniques will in broad practice bear any fruit because ... people love the convenience. That's why they buy that sh*t. That's why they use Gmail, etc.
And manufacturers aren't moving fast (or at all), and definitely not on vehicles already sold.
In my books, the main problem mainly originates between the ears of people/customers.
