Loads of kids in the back of the car.
Several kids across the front bench seat of a van/vw bus.
Sitting unbelted on the bench seats running down each side of a bedford van, and the extras sat on the floor.
Loaded into luggage area of the car.
Sitting on an adults lap in the car.
My DF changing his clothing (jumpers off, trousers off, shorts on) whilst driving down both UK and French motorways (also I believe down dirt roads through Ecuador and Peru, and everywhere else the bugger went).
Being made to hold the steering wheel whilst he did his clothing switch.
Being left outside pub or other venue, either awake listening to tapes and drinking pop/eating crisps brought out for us, or asleep in sleeping bags in the luggage area.
Steering the previously mentioned VW or Bedford whilst seated on the drivers lap (nod to safety... this was on unmade unadopted roads... usually).
Riding four up on a motorbike or moped and hoping you weren't the one sat on the mudflap or burning your leg on the exhaust.
Hacking out on over fed under exercised ponies with hats that undoubtedly did not fit and were held on by knackered elastic, no way of contacting any adults and they had no idea where we'd gone, or how long for.
Single seater chair-lifts (Bulgaria) up the mountain with just a chain and pin affair to keep you in... designed for adults so verrrrrrrrrry easy for a child to slip off particularly with the weight of skis/boots. This one DID frighten Mother...
Parents smoking all over the place, in the car, in the house etc etc.
Access to diggers, tractors, scaffolding, boats, water, a variety of animals large and small...
Taken down caves from the age of 2, ditto up mountains - my younger sister was almost flown like a kite off Striding Edge when it turned out the 'you'll grow into it' anorak made a fabulous parasail and she weighed next to nothing... hurrah for the long bit of string that ran around the bottom of it (i think......).
And much much more I have forgotten which is probably a good thing!