I saw one of those the other night while driving around. First I saw this blue little light coming from the bottom of a civic none the less. Then all of a sudden the light went away, so I got confused. So I got a little closer to see what was going on...and the light was on again....and then gone. Then understood why. The dumb kid that installed the light up tip installed it onto his brake light! Instead of doing it to his tail lights or actually running a switch...*sigh* it was funny.