I wonder if phones send out RDS (https://en.wikipedia.org/wiki/Radio_Data_System https://en.wikipedia.org/wiki/Radio_Data_System) information on the aux jack an

I wonder if phones send out RDS (https://en.wikipedia.org/wiki/Radio_Data_System https://en.wikipedia.org/wiki/Radio_Data_System) information on the aux jack and your car happens to pick up on it.