Ban hands free in cars. What next ?

I'm not so sure.  I clearly perceive a difference between talking to somebody in the car with me, and talking to somebody on a mobile phone.  Hands free makes no difference.  My brain simply works differently when I am on a mobile phone, and it is distracting to me as a driver, whether I am holding it, or whether it is attached to a dashboard.

Think, for example, of when you are on your own in a room talking to somebody on a mobile.  You might pace around, you might make gestures with your free hand, you might stare out the window, you might frown or wrinkle your brow, you might do any number of different things.  Things that you would not do if the person  you were talking to were present.  Things that you might be tempted to do if you were in a car, or that might affect your behaviour if you couldn't do them, because you were in a car....

Maybe you work differently?

With hands free you don’t turn round or across to confront someone arguing with you and you can always hang up. 

Unfortunately we don’t all have a DB7 with passenger ejection seat 💺 and I think passengers are far more distracting. 

Under the current law, it's okay to call 999 or 112  and it’s unsafe or impractical to stop while driving

www.gov.uk/using-mobile-phones-when-driving-the-law

By the time use of hands-free mobile phone devices while driving is banned, it will be outdated again as the technology changes very quickly.

May be MPs need to study other "safe usage" in other city such as this one. The professional in the video is using 6 devices in one vehicle.
www.youtube.com/watch?v=JjLaRQhkNIU

Note: the description of the video is misleading. The Driver and the customer did not understand each other due to language barrier. The usual usage for these phones are: map / zello / football result / whatsapp / service booking 

The future could easily be legalising self driving cars and increase sales of those vehicles, then ban them later for other consumer products, the less severe option would be something like self driving surcharge in a congested area.

Its safer not to drive at all and even safer not to leave the house. Ideally, we'd all stay in bed.

Why does the state and a boat load of liberal supporters think people are too stupid to make a reasonable decision depending on the circumstances?

Do police motorcyclists use hands free helmet based communications?

Is talking to Google or Waze to be banned?

How about pilots talking to Air Traffic Control?

The legislation to deal with that "huge distraction" is already there, and always has been. "Careless Driving"/"Driving without Due Care and Attention" - and, ultimately, "Dangerous Driving". Add in "Causing Death by...", where the worst happens as a result. "Carrying out other tasks whilst driving" is explicitly listed in the sentencing guidelines for Careless as a factor increasing culpability.
www.sentencingcouncil.org.uk/offences/magistrates-court/item/careless-driving-drive-without-due-care-and-attention-revised-2017/

The explicit banning of mobiles and, potentially, now hands-free is not about that. it's about public perceptions. The ban on hand-held has worked, in those terms. It's changed perceptions and made use socially unacceptable.