> or use the car as a weapon on christmas markets

On the contrary, autonomous vehicles (especially if something like automated package delivery becomes an offered service) allow car bombs without the suicide bomber inside. Instead you just place an explosive in the device and send it to the intended destination - as an organization the primary concern then becomes whether the ride is traceable back to you which might be do-able given how "frictionless" rideapps are as long as you get a burner phone, prepaid credit card and are very careful about making sure the device is clean and can't be tied to your person.

Right now the tech is limited to places where carbombings aren't commonplace, but I think driverless cars open a huge potential issue in other markets. I absolutely agree they're safer than drivers are, but let's not be hyperbolic.