Allentown, Pa.--Continental Commercial Vehicles & Aftermarket offers VDO programmable speedometers with built-in microprocessor technology that allows enthusiasts to change wheel size, gears or differentials, and re-calibrate the speedometer with the push of a button. The auto-calibration feature makes the speedometer ready to go in seconds, without the need for a complicated re-calibrating procedure. It offers one of the industry’s fastest and most accurate set ups.