C4 has a line of pre-workout supplements. Its latest product plays off "pop rocks" candy but with energy-boosting ingredients. In this week's Taste Test, we try out C4 shot rocks with some athletes in ...

Citroen has finally put into action their hybrid version of the C4 WRC car, with rally driver Dani Sordo at the wheel. The Spaniard conducted the first proper test of the Citroen C4 WRC Hybrid4 on an ...

Four U.S. Navy TRIDENT I C4 Submarine Launched Ballistic Missiles (SLBMs), built by Lockheed Martin Space Systems-Missiles & Space Operations, Sunnyvale, Calif., were successfully test fired from the ...

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It would be impossible to count the number of times we've been asked what the performance difference would be when switching from a five-speed to a C4, or vice versa. The general consensus has always ...