Trackless train, I doubt we'll ever see one of these in person, but they were once used to draw attention to movie premieres

for the gallery of the others:
http://justacarguy.blogspot.com/2008/12/1929-graham-paige-sound-train-and-mgm.html

first car show of the year, the Vista Frosty burger run

pretty cool 3rd tailight

Above a deluxe, below a super deluxe

Made from spare parts from the back yard when the city started getting on the owners case to clear out the neglected cars