General Motors introduced the first heads-up display in a car in 1988 and the systems were originally used for showing speed, tachometer and other basic readings from the dashboard. But as the technology advanced, much more sophisticated and critical information is being displayed. The original he...
you know a bit about how well your transmission is functioning as your driving will require it to shift through a number of gears. If you notice that when you give it gas that there is little or no acceleration and the tachometer is climbing, this may be a sign of early gear slipping....