I have a 2001 Prius, and would love to get window deflectors or vent visors for my car, but they seem impossible to find. I talked to my local dealership and they tried to order them from a company in Japan, but after a few weeks the company in Japan said they could not get them or make them at the time. Any help would be greatly appreciated, even if it is just finding a set that will fit on the front or back.
Years ago these were available in Canada as I recall. Search based on that, or take a tape measure to a full parking lot someday. You may find a car with a large production run with similar dimensions. If you suceed, please let us know!
I bought a set of Ford Focus window vent liners and only the rear window ones work after trimming them down. Like Doug suggested, I would recommend getting a cardboard box and flattening it. Then make a cut-out that matches the front window frame and the rear window frame. Then see if you can find a similarly shaped window. Bob Wilson