Cadillac 2008 XLR Owner's Manual page 246

Route Setting
This feature allows you to display and change the
planning methods used each time you plan a route.
With planning method options, you are able to select the
fastest route based on time or distance, using only
major roads, toll roads, and using ferries based on the
navigation system's information and information
contained on the map DVD.
The following options will be available from the ROUTE
SETTING menu:
Minimize Time/Distance: The system will calculate the
fastest route or shortest route possible. Choose Time
for the fastest route or Dist for the shortest route.
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Use Major Roads: Choose Yes to calculate the best
route using only major roads unless a route cannot
be found without the use of a secondary road.
This selection will not always offer the shortest distance
or time to your destination.
Use Toll Roads: Choose Yes to calculate the best route
using toll roads wherever possible. This selection will not
always offer the shortest distance or time to your
destination.
Use Ferries: Choose Yes to calculate the best route
using ferries when possible. This selection will not always
offer the shortest distance or time to your destination.
Display Whole Route
This feature allows you to display your entire planned
route. Total mileage and time to destination for the
planned route will be displayed on the map screen.
Touch Return to go back to the previous menu.
Calculate Route
This feature allows you to begin route calculation for the
selected destination.
Cancel Route
If you are traveling on a planned route and would like to
cancel it, touch Cancel Route. The system will ask
you to confirm by touching YES. Touch YES to confirm
cancellation of your planned route or touch Return to
keep your planned route.