They were unable to hack the Model S over the air.
They had to get physical access to the car and hack through an ethernet cable.
And they could control the motor and reduction gear only at 5 mph and lower.
A patch has already been issued and downloaded by many/most Model S owners.
No need to visit the dealership to have software downloaded like Fiat Chrysler.
Elliot Anderson could have done it.
30,000 vehicle crash deaths per year in the US and folks are wetting the bed over “hacking” LOL.