Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
Absolutely none, except if you want a blue LED, two resistors, a (bad quality) capacitor, a spring, and a fuse.
It may also make your friends or relatives laugh at you, for your lack of sense and taste.
The black plastic is pretty good and thick actually,...
Does nothing it was intended for.
As you can guess, this is a blatant scam.
This device has nothing to do with saving gas or ...
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