Little things make a big difference, and this is especially true when it comes to cars. Over time, little problems with a car, truck or minivan can add up and lead to big problems for their owners. At the same time, taking a number of little maintenance steps and making small repairs here and there can help to extend the life of a vehicle and keep it on the road forever. The people you hear about who are driving 25-year-old cars with 400,000 miles on them are individuals who paid attention to the little details along the way and fixed the small problems with their cars before they grew into big issues. Here are 10 little things car owners can do to keep their vehicle running forever.