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It depends on the car. More and more cars (most new ones) have ‘power outlets’ in them that remain powered even when the ignition switch is off in which case the cell phone would still recharge. Even many (but not all) older cars have the ‘cigar lighter’ live when the car’s powered off. It’s easy to check - just plug in the car adapter with the car off and see if your cell phone indicates it’s charging.</p>
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I don’t know where they’re at on it but cell phones with GPS capability were going to have that tied into the cell 911 service to be able to locate the phone to within feet. However, if I were to dial 911 on a cell from my house, realistically I could probably manage to give them the address.</p>