You said it's all about fun... "Circus Wagon!"
Thundersaurus. Flying Fortress.
My dad's '67 Sport Fury Convertible isn't lettered anymore, so you can steal his "Blunt Object" name.
I told Herb the other day "Mr. 2-Speed". (Slow and Stop)
I'm sure Myron will pitch in some ideas... Locomotion vs.... Trainwreck?