My father had a car phone (that is, for those that may not know, one of the early mobile phones you had to have installed in your car). We also had caller ID a

My father had a car phone (that is, for those that may not know, one of the early mobile phones you had to have installed in your car). We also had caller ID at home. We knew if he called us at home and hung up before we answered he was just calling to let us know he was stuck in traffic and would be late for dinner.