Looks like 2 or 3 Buick bodies grafted together with an RV on top.
I just found this post on the Hemmings Blog, and it identifies this vehicle as having been called the ShamRockAway http://blog.hemmings.com/index.php/2011/01/31/hemmings-find-of-the-day-the-shamrockaway
I just found this post on the Hemmings Blog, and it identifies this vehicle as having been called the ShamRockAway http://blog.hemmings.com/index.php/2011/01/31/hemmings-find-of-the-day-the-shamrockaway
From http://www.jalopyjournal.com/forum/showthread.php?t=428585&page=270