In the past, it was rarely used for anything other than powering the onboard cigarette lighter; today, it’s an indispensable source of power for countless electronics, including our smartphones.

Depending on the age of your car, it might contain a round 12 V power outlet in the dash, or possibly in the elbow compartment. And depending on your own age, you might know that as the cigarette ...

Wouldn't it be cool if every power socket was the same? Imagine if you could carry around a single cable and plug in any device to the wall. Share on Facebook (opens in a new window) Share on X (opens ...