I know a guy here about my age who has a window tinting business that is pretty successful and now he has gotten into the "laser wash" business by opening a 2 stall wash with vacuums and stuff. seems to be doing well.
2014 S.S. P938 Nightmare
2014 Dodge Durango R/T //Diablosports Tuning
2009 E90 N51 /Active Autowerke Stage 2 tune/BMW Performance Exhaust/
1993 Honda Nighthawk 750