Especially if you have a teen driver, don't let them drive a car so old that it doesn't have air bags. Anti-lock brakes are important too, but use them properly. Learn how:
"ABS Brakes: ABS brakes prevent uncontrolled skids during hard braking, by sensing wheel lock-up and releasing brake pressure (many times per minute), and just long enough to prevent a skid. As a result, you can still steer the vehicle, since the wheels can't lock up. Experts say that steering is faster than braking, but with ABS you can do both. You might say, "I was taught to do this with regular brakes; I pump the brakes to avoid skids." The reality is, when faced with a panic situation, you will NOT likely be able to stop or steer around a hazard using "threshold braking" (or pumping the brake). Average drivers don't practice those skills, and they MUST be practiced repeatedly to be mastered. Note: ABS brakes don't usually stop you FASTER than you can with the correct use of standard brakes, but for most of us, the advantage is in the ability to avoid a skid and still steer. If you have ABS brakes, it is very important that you read the information about how to use them in your owner's manual—and even practice in an empty parking lot somewhere so you know how they work and feel."
http://www.roadtripamerica.com/forum/content.php?14-Defensive-Driving-Rule-7-Buy-and-Use-Safety-Devices