To want to know who will be driving my son to this event

[kitnkaboodle]

DS aged 13 has come home and announced that he n friends are going out after school on last day of term to big out of town shopping centre where there is skating etc. I don't have a problem with the activity, even unsupervised, but it's an hour away involving motorway. You couldn't get there on public transport without it being massively complicated.
'Someone' will be driving them there. He doesn't know who, but the transport is all sorted according to social media. When I said that I'd like to know who is taking them he did the classic teenage thing of saying I was making a big fuss, it would be too embarrassing to ask, he'll pull out of it if I start making enquiries, etc etc. Trouble is I dont know all of his school friends, of course.
I honestly don't think he's hiding anything - it'll just be someone's parent and he doesn't want me to be 'embarrassing' about it. But I'm right to insist on knowing more ... aren't I...?

I would want to know and would insist on it as a condition of him going.

Not because I would particularly care about which parent it was or if I already knew them but because I would want to make sure that it was a parent and not an older sibling or something. A 17 year old who has recently passed their test is far more likely to try and show off with a bunch of 13 year old lads in the car.

Ok - motorway is a distraction!! I think I want to prove that it's quite far away. Yes, we've had the scenario before in summer hols (trip to Thorpe park) and on a recent inset day. Cooked up on social media but doesn't actually happen (probably because 'I always spoil It '

YANBU. Fundamentally you need to know exchange numbers with the parent/sibling/whoever is driving in case there is an emergency and your DS is not contactable.

YANBU re details, but motorways are the safest roads in the UK...