I'm thinking of letting my 12 year old son drive the truck around the busy city.
Why do you think it would be a good idea if you let your son drive?
I feel I should treat him like an adult.
It is wrong to let your underage kids drive in a city. You should wait till they have an understanding of consequences and driver school before hitting the road.
I still don't see anything wrong with letting my kid drive quietly.
There's not really any way that taking your 12 year old child would ever be acceptable to most people. A lot of bad things could come of this, and it would be best if you just waited until he was a bit older to begin teaching him how to drive.