Welcome to origamicar.com
According to Wikipedia, Origami, from ori meaning "folding", and kami meaning "paper" (kami changes to gami due to rendaku) is the art of paper folding, which is often associated with Japanese culture.
Origami Car is therefore a car made using a form of paper, mostly cardboard.
Right now, one or two car manufacturers and developers have mooted the idea of making a full-fledged drivable car, using the origami method! It is left to be seen whether the idea will ever get off the drawing table. Meanwhile though, the Origami Car remains the most popular amongst origami products.
With season's festivities coming soon, the demand for the Origami Car is expected to be high... as usual.