Audi’s mid-size sedan went by many names in the ’80s and ’90s but was called the 5000 in the US before the 1996 C4 started using Audi’s A-prefixed nomenclature. The Type 4A C4 was the first of five ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Best new cars coming soon: all the big new car launches due in 2026, 2027 and beyond Best new cars coming soon: all the big new car launches due in 2026, 2027 and beyond Here are the most important ...

Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...