Remember that "hay" means there is or there are it's an "all in one" verb and it is used to describe that an item is present. It does NOT describe location it describes the existence of whatever item you are focused on.
See the following examples:
1. My car is in the garage (mi coche está en el garaje)
2. My car is black (mic coche es negro)
3. There is a car in my garage! (Hay un coche en mi garaje!)