As Hurricane Irma bears down on Florida, Tesla issued an over-the-air update to drivers in the state that unlocks the full battery capacity of its 60 and 70 kilowatt-hour Model S and X vehicles. The update provides those trying to escape the path of the storm with an additional 30 to 40 miles above the typical range of the vehicle, according to Electrek.

Tesla’s 60 and 60D vehicles offer a range of just above 200 miles on a charge. Faced with an order to leave, one Tesla owner contacted the company, saying that they needed an additional 30 miles of range to get out of the mandatory evacuation zone they were in. In response, the company issued an update to other drivers in the state, providing them with the full 75 kWh capacity of their vehicles through September 16th. One driver posted a screenshot of his app, which showed off the new extended range. A Tesla spokesperson confirmed that the company’s 70kWh vehicles also received the update.

Tesla introduced its cheaper Model X 60D and Model S 60 / 60D vehicles last year. The vehicles are equipped with a 75 KWH battery, but they are software locked to use only 80 percent of that available power. Drivers could unlock that extra capacity with an update for an additional $3,000. Tesla has since discontinued the Model S 60/60D and Model X 60D vehicles, saying that most owners were simply opting for the higher range vehicles.

Update September 10, 2017, 11:30AM: Added comment from Tesla regarding 70kWh vehicles.