Car Wash killer

A disturbed individual has recently been targeting our area and violently killing individuals he encounters at outdoor self-service car washes on
extremely humid evenings.  This male waits behind car washes in slow traffic areas with a bucket.  In this bucket he conceals a weapon believed to be an ordinary kitchen knife.  When individuals pull into the car wash, he approaches them on foot with a story about his car overheating and needing to get water for the radiator to bring back to his stalled vehicle.  The man is only triggered when individuals say the phrase “Hot enough for you?”  He then proceeds to kill the customer and leave the body in the trunk of the car.  Please be extra careful when approached by a man on foot at any car wash or service station.