In other words. Once the Car Talk staff listens to the message you leave them, and decides you might make a good caller, what do they do next? Do they have their computer phone you up and schedule a time for a real person-to-person conversation? Or does an actual person phone you up?..
Thats already been explained from the above post. Computer or person? That we don’t know but really it does not matter.
In a different matter but still related, why did you not answer the phone? You claim you thought it might be a salesperson. How many people get po’d from missed calls that came but they did not bother to answer the phone? A ton! I am not being crass but next time answer and if it is a salesperson simply tell them no thanks and hang up.