When going on a trip, it is wise to have car rental on your policy.  Suppose you start you 4 day trip on Friday night after work.  You are 100 miles from home and someone runs a red light and hits your car.  Your car is no longer driveable.  What do you do?

If you have car rental on your policy, you will be able to continue your journey. 

Does my auto insurance automatically cover my newly purchased vehicle?