I also have a couple of electric car themed stickers on my car which anyone's welcome to download and reproduce for themselves.
In the middle of the rear window is the new Electric vehicle - Enjoy the silence
sticker which you can download from here: http://kiwiev.com/wp-content/uploads/20 ... ground.png
Then there's the classic 100% electric
sticker which I made over a year ago, which you can download from here: http://i.imgur.com/gY0pyMl.png
To download the file, right-click on one of the above links and select "Save as" on your computer. Once you've saved the file, email it to your local printing shop. Both sticker images are created on a transparent background, so your local copy shop will have no problem making stickers out of them. I had the "Enjoy the silence" electric car sticker made with dimensions of 50 cm wide x 30 cm high (20 x 12 inches). I had two stickers made on white, self-adhesive vinyl cut-out at a cost of €6 each ($6.35 US).
Warning: if you do
make them, I recommend making two
, just in case you make a mistake during the application. Don't ask me how I know this...