Note: Magic things you plug into 12V power ports don't give you extra MPG
The Magic Power System Power Bar plugs into your auto's 12V power port and is claimed to increase fuel efficiency up to 30 percent, increase torque and reduce emissions. Also said to improve car audio quality and "clean the entire car electrically," it costs just £35.
It's a scam, of course, but hey—it says its magic right on the side!
Contribute To The Environment Unconsciously With The Magic Power System! [Jalopnik via Dan's Data]

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now I really want to know what's inside that thing
I love that it's just labelled "magic".
Obviously, there's a leprechaun inside.
@#1 Green Tea and electrolytes of course. It's what cars crave.
It's a 12 volt moron detector!
It doest have any LEDs? How does one know its on?
Just great! Another product that bites my internet handle, MPS. The other was the Mega Percussion Synthesizer and now this. Why can't they call it the Power Magic System and then abbreviate it... Oh... I see.
I think if the creator of this device would stick this in a different hole and not pollute our environment with crappy, useless, sure to fill a landfill, junk, we would all be better off.
Magic is useless without a switch that lets you set it to More Magic.
Samf, that's *exactly* what I was thinking.
The real scam is that it only lasts 2-3 years (2000 hours)... and then you have to buy another one.
re: @6, yes, it has LEDs!
More info at http://www.opulent-si.net/MPS01.html
Oh how I love Truck Stop Shopping!
I have to get one of these even though I dont have a car. I'll keep it with my Tiger Attack Prevention Rock in my box of precious things.
It's almost tempting to buy one just to dissect it and find out what components (if any) are inside.
My money is on the thing having nothing other than the simple circuit to keep the LED from burning out.
It's not full of leprechauns.
Its full of NANOchauns!
yeah! let's see a teardown!
If I understand the product page correctly, it tells you if your battery has a full charge, so I suppose that it would help your car operate by letting you know if it was running at all.
Downpressor; Have you been attacked by a tiger lately?
I didn't think so.