Magnolia Car Wash-K Kar Center in Santee has operated as a 100-percent hand car wash on North Magnolia Avenue since 1993, making it the city's longest-running full-service wash. Eliminating automated tunnel equipment removed vehicle-height restrictions, enabling the crew to hand-wash commercial trucks and semi-trailers whose fleet operators also source drivetrain components through San Diego Engine Parts on Prospect Avenue. The co-located STAR-certified smog test station, operating since 2002, runs a pass-or-don't-pay emissions-testing policy with one free retest included per visit. Vehicles requiring paint protection beyond a hand wash step up to ceramic coating and paint-protection-film installations at Xclusive Auto Customz two blocks south on the same Magnolia Avenue corridor. The commercial truck wash accepts Class 8 semi-tractors and full-length trailers, hand-washing each rig from cab roof to wheel wells and undercarriage without automated equipment.