Autotropolis - A resource of information about buying used or new cars. - Gas mileage (MPG), greenhouse gas emissions, air pollution ratings, for new and used cars and trucks.
Kelly Blue Book - New car prices and used car values.
Missouri Commercial Driver Licence Manual - Guide to get a commercial driver licence in Missouri.
Missouri Driver Guide - Learn the rules of the road and how to get a driver licence in Missouri.
Motor Vehicle Recalls National Highway Traffic Safety Administration - Find motor vehicle recalls, child safety seat recalls, tire recalls, and more. 
NADA Guides - New prices and used values for cars, motorcycles, boats, and recreation vehicles.