When I was a kid, you used your car lighter to, well, light your cigarette. No clue to the dangers of second hand smoke, my parents would light up with the windows closed. The interior of the car was worse than a bad day next to the Hudson River on a foggy day. From the back seat, I could barely see the road.
Things sure have changed. My parents stopped smoking, I grew up, and now use my car lighter for much better things. What kind of things you ask? Mounting my iPhone, GPS, Galaxy Tab, Smartphone or Sirius / XM Radio. All lighter mounts have an integrated power adapter. Some include a universal port to plug your existing car charger into. Others actually have an integrated USB cable to power your smartphone or GPS.
We find the lighter, depending upon location, can make an excellent spot for a GPS application. It’s also great to just power your unit on the drive home.