Try looking in the health, first aid, or safety section at the library or talk to a doctor. You must leave the vehicle. You jump and you do not touch the car and the ground at the same time. Now it is time for you to shuffle away. The higher the voltage, the farther electricity could spread through the ground.
Soil contains many different elements.
If the soil has a lot of metals in it, it will conduct electricity very easily. Think of 3 to 4 ways water could affect how far electricity could travel in this situation.