The penalty is that if you have a crash your child will fly through the windscreen, lacerating their body to pieces before smashing into the road. Or if you put the seat belt on them, they'll have their body practically ripped in two.

If you haven't got the natural parenting sense to put your child in a child seat in the rear of the car then you don't deserve to be a parent.

If you don't have the ability to control your child and tell them that they're not allowed to sit in the front then you don't deserve to be a parent.

Oh yes, there's also a monetary and points fine.