Nostalgia has its place, but Airline Motors died a long time ago, and the owner of this building should allow the current tenant to remove the Airline Motors signs and put up his own.
For those who would like to remember Airline Motors, and remember it as it was, the photo at the following URL (minus the copyright watermark) can be bought from the photographer who shot it:
http://pompo.com/airlinemotors.html