FORD 2010 Crown Victoria v.1 - Manual (Page 213)

Emergency towing
In case of a roadside emergency with a disabled vehicle (without access
to wheel dollies, car hauling trailer, or flatbed transport vehicle) your
vehicle (regardless of transmission powertrain configuration) can be flat
towed (all wheels on the ground) under the following conditions:
• Vehicle is facing forward so that it is being towed in a forward
direction.
• Place the transmission in N (Neutral). Refer to Brake-shift interlock
in the Driving chapter for specific instructions if you cannot move the
gear shift lever into N (Neutral).
• Maximum speed is not to exceed 35 mph (56 km/h).
• Maximum distance is 50 miles (80 km).
Roadside Emergencies
213
2010 Crown Victoria (cro)
Owners Guide, 1st Printing
USA (fus)