What will you need:
Will to live
Step 1: Don’t panic: This may sound a little strange but it’s very important. DON’T PANIC! when you panic it causes you to waste extra time. Know that the car usually sinks heavy end first, so the engine is bound to go under. You’re likely to be left in a 45 degree angle.
Step 2: Have a exit plan: Having an exit plan is the most important step because this is how you get out. Roll the window down as soon as you hit the water. You won’t be able to open the door at this point because the water force is to great. Although your power windows should still be working for a couple minutes it’s up to you if you choose not to wait. If the window doesn’t roll down for any reason, break it out by using your foot, shoulder or anything that will work. Try to aim for the end of the window as this prevents the glass from falling back on you.
Step 3: Desperate times: If the window will not break no matter what than you’re going to have to try an alternative method. This involves grabbing the door handle and holding onto it, so you don’t float away when you take off the seatbelt. Once the water level reaches your neck, hold your breath and go underwater and open the door. Since the car is submerged the water pressure will be balanced out now.
Step 4: Getting to safety: Once out the car, swim until you get to safety.
Don’t take anything with you unless it’s another human being. At a time like this, even pets are expendable.