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Whenever I’m in the car listening to my favourite CD, it always happens; my batteries go dead. To solve that problem, I built this extremely simple regulator circuit. It steps down the 12V from the ...

Wayne Cunningham reviews cars and writes about automotive technology for CNET's Roadshow. Prior to the automotive beat, he covered spyware, Web building technologies, and computer hardware. He began ...

I've been thinking of getting a new car stereo, but spending $100 or so for something that I can only use in my car that isn't critical to driving is kinda wasteful. I was wondering if I could get a ...