I remember in the old days you'd have to start a car's engine or drive it around a bit if it was sitting for long periods of time, say, when you were on a trip and left it at home. Is this true with the Prius? Will the battery stop working if I'm letting it sit on the driveway for weeks without using it?
The 12v battery WILL eventually be drained. Same for any car. But the Prius 12v is not a large capacity battery, it doesn't need to be because it doesn't turn the engine over for it to start. The hybrid battery can go several months before it too will eventually drain. If you must leave it, perhaps a 12v solar charge could be installed to keep it charged up.
