A location apparatus for guiding a user to a location, including: a system
unit configured to determine a current location using radio signals; a
user interface unit having a display area and a button; a memory unit; a
processor configured store a first location in the memory unit in
response to receiving a signal from a vehicle indicating that an engine
of the vehicle is off, and a computational unit configured to interact
with the button, wherein the computation unit retrieves a second location
from the system unit and calculates a relative three-dimensional
direction from the second location to the first location upon selection
of the second button by the user, wherein the relative three-dimensional
direction is graphically represented on the display area of the user
interface unit.