We live in an age of computers and technology. Even our cars have to change to keep up with new developments. The hi-tech devices we now use are sometimes called "smart car" devices. A car's suspension is also known as its "ride." It's how the car handles the road. Now drivers can use a computer to change the suspension -- from luxury sedan to sports car -- at the flick of a switch. Traction control on slippery roads is often handled by a computer, too. The computer senses when a wheel is spinning too fast and slows it down. That way the tire can grip the road better. Global Positioning Systems (or GPS) help drivers navigate. They appear as onboard video screens. They show maps, location, the best route to follow, and even traffic jams. And features such as air bags and anti-lock brakes are controlled by a master computer installed in the engine. These electronic devices are in addition to the now standard features such as cruise control, power seats, windows, door locks, transmissions, and pollution control. All those were once considered as cutting-edge as the new devices we see today.