That's true. At least here in the USA it is. At Jiffy Lube I think you can watch through glass. At Pep Boys you can't see anything at at the dealership they take your car to the bays in the back and you can't even see your car.That's not always possible. Many shop's work areas are off limit to customers for safety and insurance reasons. You can still peek from outside, or through see-through window, but some shops don't even have that.