Treasure Valley car wash chain Metro Express was purchased by Mister Car Wash, the largest car wash chain in the nation.
Notice of the sale was given in a Friday press release. The sale price was not disclosed.
The three Metro Express locations are in Boise, Meridian and Nampa.
Metro Express founder and owner Bill Martin built the car washes between 2004 and 2010.
The name of the car washes will eventually change to Mister Car Wash, but the facilities will remain mostly the same, Mister Car Wash Marketing Director Sarah Mendez said.
"The people will stay the same. All of the service (customers) have come to expect will remain," Mendez said. "There will be small upgrades, but it's in such great condition we don't anticipate a lot of change."
In 1996, Martin was a founding partner of Car Wash Partners, which later became Mister Car Wash. With Martins help, Mister Car Wash expanded from three Boise locations to 38, including car washes in Texas, Minnesota, Idaho and Utah, according to the release.
Martin retired in 2000 and started Metro Express four years later.
Mister Car Wash has expanded since to 109 locations and become the largest chain in the nation.
I know first-hand that Mister is made up of people who are dedicated to car washing and passionate about customer service, Martin said in the release. Its important to me personally to leave my crowning achievement in good hands, and Mister is at the top of our industry."
According to previous Idaho Statesman reporting, Martin has worked in the car wash industry since 1969 and was named to the Car Wash Hall of Fame in 2012.
Mister Car Wash will now have five Treasure Valley locations.