Interstate + Moped = Disaster

You know what really grinds my gears?!?

Someone holding up rush hour traffic.  Rush  hour traffic is bad enough...we don't need someone to assist.  Going north out of Indianapolis on I-69 is self torture.  I highly recommend everyone avoid it at all cost.  This specific day, I could not tell what was holding up traffic so bad, until I FINALLY maneuvered around a slow car.  I found a slow car but the reason was much, much worse.  A moped on the interstate is not only illegal, but extremely stupid. Keep your moped to side streets and country roads!!!!!  What are your thoughts?  Have you seen something similar?  What have you seen that Grinds Your Gears during rush hour traffic?