[Most of the info says it is a German company.] The yellow sports car above is actually one of the decals pictured as is this one being applied.
See the before and after effect:
The decals can depict enormous tractors, a folded-wing airplane, a cabin cruiser boat,
a stash of gold bars or expanse of wine casks... you name it!
Here are some more:
|Create confusion with this illusion!|
|Maybe soon given gas prices.|
|Add a philosophical thought..|
You can see even more by searching for "garage door posters" under images. [NOTE: Don't let your kids search if you object to some adult imaged decals.]
Image credits: stickerpatch.blogspot.com, slackers.co.za,incredible-illusions.com, mytechnologyworld9.blogspot.com