Discipline my friend
This dog needs regular exersize. This will discontinue the nervous chewing and scratching.
in the barking garage
Scratching a dog behind the ears indicates nothing about the dog; it only indicates something about the person who is scratching the dog. Perhaps the person is the alpha male.
Dog guards for cars are made to keep a dog in place in the car and not interfere with the driving of the car. This is for the dog's safety as well as the safety of the car's other occupants.
Bring your dog on short car rides, and gradually take him on longer ones.
Flea's which dog's have
give it food
Put fox scent (or urine) which you can buy at your local co-op and put around your vehicle.
The dog has been scratching and has scraped away some of the skin.
You spoil a nice car by taking car of it, not scratching it, and not denting it.
it was scratching its balls
Reasons why your dog is scratching itself would be because it might have fleas, allergies, walking dandruff, skin infections, ticks and lice, fungal infections or seborrhea.