i heard wrx's have it somewhere but i dont think thats true. any cars you know of have water injection from the factory?
IC sprayer external not injected now go suck an egg. (don't know if this made it to any of the US versions so far)
What is this "stick water" you refer to?
I think he meant "stock".
Oldsmobile made the first stock engine with water/alcohol injection in 1962.