[Lost in Cornwall]

A few years ago the police thought my wife was in danger. I knew she was ok because she'd just rung me to say she was on her on her way home but they wouldn't take my word for it. Instead they told me to ring her mobile and keep ringing till she answered it even though I told them she was driving. Then to tell her to pull over and phone the police to tell them she was ok. What would have happened if a copper had seen her answer the phone to me or she'd caused an accident? The police told me to do it would have seemed a very lame excuse.