Clark rigged his iPhone, video camera pointed forward, to the back of a baseball cap equipped with a battery pack and nestled inside a stocking cap (mostly for comfort) and is streaming live to a UStream.tv forum to take the MP3Car community along to Las Vegas.

"We just came up with the idea on the plane," Clark says. "It was a way to show our community what we're seeing." That includes strolling the show floor or the Las Vegas streets, and the occasional meal. Videos are banned from casinos, so viewers won't see any streams from the gaming tables.

MP3Car markets custom car computing, such as touchscreen computers used by the likes of police, ambulances, and taxis. It has a large and lively forum community and Clark and his colleagues decided to take them to CES, virtually.

The biggest hassle, predictably, is the battery drain on the iPhone and occasional service interruptions. But the live stream has been active since Thursday night, and the for playing on MP3Car.com.

See PCWorld's .