I know i am getting old and don't get out much but the last month i have seen 3 different cars with these silver things sticking out of the cars hubcaps.
So what are they and why do people have them on their car?
I remember something kinda like them back in the day but these things i been seeing could do some damage if the hit something.
here is a photo of what i am asking about it's the car on the right.
