I just saw a question on this and it has been discussed a few times.
This might fit under the battery section.

What happens if I run out of gas?

If you are pushing for the most miles to a tank or you just forgot to get gas and you ran out, you have about one to two miles (depending on driving habits, conditions, and battery state) before the main hybrid (traction) battery runs out of power. If you are unable to make to a gas station before the hybrid battery dies, you will be stranded and need to visit a Toyota dealership to have the battery charged.

Note: When your gas gauge reaches E and your MFD indicate 0 miles left on the tank, you have about 3 gallons of gas.