Depends , the wireless connection most car companies use is bluetooth ,, what’s the max range on that?
For us or the government?
33 feet to the repeater/transceiver the spook stuck on your car.
It talks to the satellite.
You could plant a bluetooth device on a car, and communicate with the device through other means (cell phone, satellite, etc.)
GM uses a cellular phone with an in-band modem. The "OnStar" telematics control unit is tied to the vehicle data bus in a fashion that permits unlocking doors, honking horns, flashing lights, remote start/shutdown of the engine, access to diagnostics and more. I was working on Wingcast to create a competing capability for Ford in the early 2000's. All the capabilities listed above were in the telematics unit. I built simulators for 5 Ford and one Infiniti model to exercise the TCU capabilities. Wingcast hired a huge number of H1B employees who saw "startup" and reacted with "party" instead of performance. They failed as a venture.
The devices I used did not have access to brakes and steering. That has probably changed with the advent of ABS brakes and active suspension systems. There are likely additional controls that could be leveraged.
A package could be made to link the blue tooth to a wider connection.