That's a rough way to go, but you're certainly going to love washing your car indoors all year around. I thought it would only be a real benefit during the winter, but in the summer, you can wash the whole car without the sun requiring you rinse each panel before proceeding to the next.
The floor drain in my garage was actually a deciding factor of choosing this house a little over a year ago.
Token Indiana car having its butt rinsed off before I work on the underside: