Four year olds won't sit in a car for 250 miles without wanting a piss, or a shite, or food, or a drink, or to avoid throwing up, or some, or all of the above.
Which means they would have stopped somewhere, and got out of the car, with both parents Covid-19 positive, at a service station. Thus putting God knows how many people at risk.
His story has already shifted this morning, and Kuenssberg is spinning like fuck for him (even to the point of directly countering the journalists who reported the story), but she's defending the indefensible.
If he doesn't go, then all bets are off. Why should anybody else follow the rules if he doesn't?