#1 Batch your errands in the same area so that you can drive straight to your final destination. Map out every other location to stop at along on the way. This is how the delivery drivers do it!
#2 Save your errands for one day so you are not going back and forth in the car.
#3 Before running out to buy more of something, check your home for possible replacements or other alternatives. Get creative!
#4 Buy online whenever possible
#5 Walk or ride your bike
#6 Share your ride with friends and family.