That being said: I will always bless my breeder for preparing Bacca before I brought him home.
First thing she did was to start crate training him away from mom and siblings.
Second, knowing that Bacca was going to be going from country to the suburbs, she took Bacca out on the front lawn every day by himself and "taught" him about cars. I don't know what technique specifically, but I'm sure it involved alot of treats and praise.
When I brought him home at 8 weeks, he slept through the night and has never shied from a car since.
I live on a busy state route. All kinds of semi trucks, the school bus stop is only about 20 feet from my house, railroad tracks about 100 yards away. My puppies were exposed to all kinds of different stuff when they were babies and never had any fear or reaction at all to anything. They even went to school with me to pick up the kids. (2 at a time) They were crate trained, almost completely housebroken, started on walking on a leash, and knew how to sit and shake when they went to their new homes! None of the other puppies have this problem. They are all well adjusted happy dogs.
She is not following anyones advise on exercising him, they have stopped walking him all togather! He gets to go out to go potty and thats it. This behavior didnt start until he was 4-5 months old and has just slowly got worse. Which is about the time she went back to work. (When they got him she wasnt working)