Final answer:
London needs to refuel soon.
Step-by-step explanation:
A possible interpretation of this situation is that London needs to refuel soon. Since London drove for 2 hours and has 11 gallons of gas left, it implies that the car is consuming a significant amount of fuel. If the car had high gas mileage, it would have consumed less gas and would not need to refuel soon. Similarly, if London started with a full tank of gas or had a small gas tank, there wouldn't be a need to refuel so soon.