in the middle of nowhere or late at night. in such situations, not only you need an emergency locksmith, but you also have to make sure he knows how to deal with the type of locks your car has. you should expect to pay a relatively high fee, but this is normal if you think about the fact that the expert has to drive to you in the middle of the night, with all his tools and equipment, to save you from spending the night nearby your car, freezing to death and starving.
as you can see, the services offered by a car locksmith are more specialized than general ones. nonetheless, 