What do they do? I usually see them in cars from japan and always wondered what they do?

 

earth to matilda! it's not like earth is ACTUALLY calling you!

 

what :eh:

 

and then i was like Whoa Hansel! Haven't you been smoking peyote 6 days straight?

 

it "upgrades" your cars electrical system's grounds.

 

Please tell me that 'Old fart grounding straps' don't have a proper technical name. From what I gather, they put them on thinking that, if they don't... the car will explode from static electricity. Meh, who knows... might cut down on gas pump fires.