Having a power line falling on your car can be one of the scariest things you could face while driving. If an active power line falls onto your car, it charges the car full of electricity, making you and your passengers immediately at risk of being electrocuted to death if you make a wrong move.

1
Stay inside your car and call 9-1-1 or the appropriate emergency number where you live. This is the safest way to react. Give the emergency dispatcher your exact location. Do not touch the windows, doors, or anything metal such as the radio. Wait for trained professionals to rescue you. Warn anyone who starts walking towards the car to stay far away.
Contrary to popular belief, the rubber tires of your car don't insulate or ground the vehicle. What really protects you is the metal frame surrounding the vehicle, which acts as a Faraday Cage.

I could just speed off

2
If you absolutely must exit the car in an emergency situation (such as a fire), follow the next steps to safely leave the car.

3
Gently open a door all the way, being careful not to touch anything metal or the power line itself.

4
Position your body so that you're facing the ground.

5
Jump off the car and land on both feet at the same time with your arms folded across your chest. Do not touch any part of the car with any part of your body as you jump.

6
Shuffle your feet across the ground until you reach a safe distance away from the car. A safe distance is considered at least 10 feet (3 meters). Keep your feet 6 inches (15 cm) together.
The reason you will benefit from shuffling instead of walking is to avoid "step potential." When we walk, one foot is raised up in the air while the other stays on the ground. Electrical current can arc when you lift your foot and that creates the bridge needed for the current to pass through your body.

7
Stay away from the car and wait for help to arrive.
http://m.wikihow.com/React-if-a-Power-Line-Falls-on-Your-Car

This is awesome. Thanks Autosbay, you are really wonderful Bro.

While I don't pray this happens to anyone, it's worthy to know.

Do not come out of the car