What is exactly a hybrid car?

I know it uses gas and electric power, but what I am wondering is where does it get the energy for the electric power. I think it uses the battery, but won't you have to recharge it every night? Wouldn't that cose more money? And if you don't recharge and you want your car to run on battery power... show more I know it uses gas and electric power, but what I am wondering is where does it get the energy for the electric power. I think it uses the battery, but won't you have to recharge it every night? Wouldn't that cose more money? And if you don't recharge and you want your car to run on battery power won't it run out of power within a week? I am so confused, please help!!! :)
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