This morning I discovered that since DD1 grew out of the child seat for DP's bycicle a few weeks ago he has taken her to school a few times on the back of his bike, i.e. perched on the luggage rack thingy. She is 4.6 yo. It's about 10 mins walking to school, faster on the bike obviously but it's a busy road, there is lots of traffic and many construction site vehicles and buses.
I went completely mad at him when I found out - he thinks it's fine and not dangerous. and of course I am the crazy, raving one and he is Mr. Calm and collected, his usual strategy for turning things around when he is the one being an idiot.
BTW we are in Spain so road rules are probably different, I don't know what they are but even if I did it wouldn't make him think he was wrong as he doesnt think rules apply to him. Arsehole.