Did the fish turn up on a motor pike? (Sorry - old habits and all that... I'm deeply ashamed)
I think the words "just in case I crashed through the ice" would have deterred me from even attempting that, Diane, far less winding down my windows, but I understand the logic. I walked across a lake in Sweden several times two years ago (just before Lockdown), and that was scary enough despite me not being the size of a car (unlike now - curse you, Covid!). Plenty of other people were doing it, including on bicycle, which perversely gave me more confidence, whilst others actually enjoyed lounging on hired deckchairs on the ice, soaking up the sunshine.
People are mad.