I haven't really looked to hard, but does a hybrid exist that's battery first and then has an ICE to fall back on for charging the battery / supplying electricity to the electric motors?

All I want is to be able to have an electric car, that if I'm in a real jam and need to run it on petrol I can fill up a 20 litre tank and make a few hours of driving, even if it's in 'limp home mode' until I can get a charge again. My range anxiety is real! The Australian outback is big.