Robert Wayne Harris, 40, received lethal injection after he expressed love to his brother and three friends who were watching through a window.
"I'm going home. I'm going home," Harris said. "Don't worry about me. I'll be alright. God bless, and the Texas Rangers, Texas Rangers."
He snored briefly as the lethal dose of pentobarbital began, then all breathing stopped.
Harris was convicted of two of the five slayings in March 2000 at the Mi-T-Fine Car Wash in Irving.
Prosecutors tried Harris specifically for two of the slayings: Agustin Villasenor, 36, of Arlington, the assistant manager, and cashier Rhoda Wheeler, 46, of Irving.
-- The Associated Press