Ford wants to use drones to give your car surrogate sensors

According to Ford’s patent filing, your vehicle would register a fault in one of its sensors and using a vehicle-to-vehicle network, it communicates with one of these drones, which then finds its way to your vehicle. Once there, it lands on and acts as a replacement sensor while it directs your vehicle to a nearby repair center where the issue could be fixed permanently.

In theory it is a cool idea but in practice, it seems like it would be a little tough to implement at scale.