What are we going to do ? I can't get the car out of this ditch . I'm stuck !   I'm worried , Tom . I haven't seen any other cars for almost an hour .   I know . This is terrible . What can we do ? This snow doesn't stop falling !   I told you we should have stayed in town today.The weather report said 100 percent chance of snow.Why did you want to come up here ?   I wanted to show you the cabin . We only had another half-hour to go .   Well , now we're stuck . What can we do ?   I don't know .   I've heard that when this happens , it's important to save energy .   What do you mean ?   We're stranded here , Tom . We may be here a long time.We need to conserve the gas in the car . The car's energy is what will keep us warm .   I have plenty of gas .   Yes , but the gas and the battery both have to stay working.We can't just let the car run and run.If we do , it will die soon . Then we'll freeze .   So what can we do ?   Turn the lights off.Then , run the car and the heater only about fifteen minutes every hour.That will conserve the heat as long as possible .   Alright . That's a good idea .   I wish we hadn't come up here . Now we'll probably be here for days .   Days ?   Yes , it happens.That is what happens in big snowstorms . People get stranded for days .   Oh , my God ! It's good we have food .   Probably we'll survive.But turn the car off for about forty-five minutes . Then we'll turn it on again . 