Ok I have a 40 Z with 18600 miles on it completely original,radio still works, clock doesn't.Orginally sold to G C Patton at the Aberdien proving grounds in Maryland in may of 1940, it was bought back by a lincoln dealer in 1947, which I bought from them,at the time it had 7,000 some miles on it.But do to my service time and other Government work the car spent alot of time in storage mostly in Nevada at the Test Site, I do use it once in awhile and perform general maintenance as required by the manual. So see we do have people that you can converse with it Gravity