This has come out of two things I have seen in my observations over the years. The first was way back when, and I was really into the 'behind the scenes' stuff in movies. I saw a documentary about Francis Ford Coppola. He was explaining he had a trainer he used for editing. It was a shiny, Airstream chrome trailer. This is an image that has stuck in my mind since he made Apocalypse Now!!
The second image is that of these people who like this idea of pimping their ride. Making it look a little like it was from the 'cheap' market or something. Adding dice, go faster stripes, etc. So, I was always in love and in admiration for the Galapagos tortoises (who wouldn't be, as they can live to 150yrs). So, after doing "the Sneaker" and "No Place Like Home" things bounced around my head and in popped this image of a tortoise who wanted to improve his ride. Thinking back to the Airstream, everything fitted together, nicely!!