Use the special equipment in the purpose of rescuing after driving though the dangerous places. I think it is the only way of saving people’s life. Consider that in the beginning the general condition of the given car will not as good as you think. It will not be fast enough to get away from the zombies, that you will meet along the way. So that time it would be great idea to buy the highly recommended weapons that have damage scale up to 100. I know that it really does cost a lot to purchase the gear, but saving money is the only option of doing it properly.