If you don't have a garage at home just drive to a coin op when they aren't busy and use their water. Follow the same process with the two bucket method, etc.. An added bonus for the coin op is that they are typically covered so you don't have to worry about the sun.
Also, if you are applying products to your car a lot, you might want to invest in a mask that will filter out the smells/chemicals and gloves. Chemical smells drive me nuts and I have found these to be helpful.
Last edited by asus389; 11-18-2012 at 04:19 PM.