How do you guys wash your car with hard water?

We have real hard water out here in the country. My family got me this one year for daddy's day.

Amazon.com: Mr. Clean AutoDry Car Wash System: Everything Else

It looks gimmicky as all hell but the damn thing WORKS.

I very seldom wash my car, but I did buy this for a few bucks in the sale bin @ Checker & YES it worked great....

NO water spots 8)