Maybe 4 year olds already have the brain power to learn to drive if they so desired.
Almost certainly, there are 4 year olds who ride small motorbikes etc. I think the main problem is that they can't really be held accountable if they have an accident.
Animals are born walking. Humans are somewhat deficient and need more training postpartum.
Almost certainly, there are 4 year olds who ride small motorbikes etc. I think the main problem is that they can't really be held accountable if they have an accident.