From KSAZ:

93-year-old George Hartman was a longtime Sun City resident and volunteer. He even coined the phrase the city is now known by -- "Sun City is a city of volunteers" -- that's the slogan George Hartman came up with years ago. [...]

Monday night, Hartman was behind the wheel of his car when it plowed through his garage and into his backyard swimming pool.

Neighbors say he was all packed up and ready to move into a new condo.

Investigators don't know if Hartman made a mistake driving or if he had a medical emergency.

Hartman leaves behind two dozen children, grandchildren, and great-grandchildren.