In his situation I can't see the issue. Sat in a car with child going to separate property to be cared for.
I wouldn't blame anyone else for doing the same thing.
People do seem to have lost the capacity to be sensible.
If you have not been out everyday, even for excersise... Maybe once a week to somewhere with no one else around, if you have shopping delivered and you wash it.
What's your risk of contacting corona?
If your elderly mum, not 100s of miles away but let's say an hours drive... Is doing the same as you... After both waiting 14 days incase you already had it.. What is the issue with seeing each other?
On the other hand, would I go and buy a take away coffee right now? At a park in London?
No. I wouldn't. Unless separate people handled money and served drinks.
Frequent hand-washing and gelling. Staff wearing proper grade masks, not flimsy surgical masks. Plastic cups and lids, kept and held in sanitised conditions and covered with suitable materials.
Even then I'd be uncomfortable. Would I buy ice cream from the lady with plastic gloves who doesn't change them and takes money in same gloved hands as serving the ice creams? No.
Would I go to the shops several times a week but then see an elderly relative? No
Would I wear a mask in a car alone? No.
Do I think in confined spaces people should be encouraged to wear a mask, yes.
It's all about breaking transmission. In that boundary, I can't see how Cummings has compromised the whole point of breaking transmission.