At the time, the talented and creative people at Jim Henson's studio were working on production design for their feature film;
The Adventures of Elmo In Grouchland.
F.P. Friends (or Tyco Preschool, as they were called back then) held the Sesame Street / Muppet license for producing toys, and I was one of their go-to freelancers for many of their related concepts. Often when a studio and toy company share a close working relationship, the studio will call on product development to come up with concepts in a tandem effort to shorten turnaround time at both ends.
The parameters for this assignment were pretty straightforward; Come up with a handful of vehicles comprised entirely of junk.
The resulting concept sketches were a series of drivable ready-mades that could pass as cars, trucks, and vans for incidental use in populating the world of Junk.
The last 2 vehicles had already been designed for use in the movie, but Fisher-Price and Henson wanted concept drawings for each.
These were already being considered for toys in the line, and they wanted something for context in relation to the vehicles I came up with.
..RIP, Mr. Henson.
Thanks for all the joy.