The Big 3 manufacturers' have their head quarters there.
most cars are made in china
Mishigan I think
Mishigan 2012
they are made of steel and plastic
Older cars were made out of steel and now most cars are made of fiber glass
Most cars are manufactured in the companies home land.
Mishigan-Lu
most american cars are made in Michigan, though a few other states make cars aswell
On most cars and trucks made in the last 60 years it is negative ground.On most cars and trucks made in the last 60 years it is negative ground.
Chevolet
Plastic and metal.
Some cars such as Rolls Royces and Maybachs are made by hand to ensure perfection and some cars like Bentlys and Bugattis are made by hand because the shape is to complex for a machine but most normal cars are not.