It is cool and I have posted on this very topic not too long ago.
They are fun to have, but I knew a guy in College (at Alabama) who had one in his truck,...one day he had made some comments to a couple of nice looking young ladies who were out minding their own business exercising on the quad along the main drag on campus, and I cannot remember the exact time line but not soon after one of the young ladies' boyfriend found that truck with the speaker that had wolf calls coming from it and did terrible things to it. I could not believe that someone would do such a thing to a vehicle that did not belong to them... anyway oh College, how I miss it.... Remeber Violence solves everything!
just kidding about the violence solving things...