If your hybrid car is in desperate need of a wash and dry, leave it to the car wash. The automated car washes are the greenest choice, since they operate as efficiently as possible. Many car washes actually recycle water, too. When you wash your car at home with a hose, you are likely to use more water. It's even worse if you use a non-biodegradable soap, because it'll go into the storm drains or groundwater.