I don't see it on there, but I would add Mike's Car Wash - 10764 U.S. 36, Avon, IN 46123. Just a little bit west of Raceway Rd. on 36/Rockville Rd.
One of the nicer washes around and their manual car wash bays give you 15min for only $5! They have automatic wash as well if you prefer that.
My recommendation would be to NOT venture on 38th St EAST of 465 if you can avoid it!