Pittsburgh 4000 goes missing

Thanks to Nicholas Katz for pointing out that Port Authority Transit 4006, which has been sitting for around 15 years in a parking lot at the west end of the truncated Superior Viaduct in Cleveland, has gone missing. The car - shown above in a 2019 photo from here - is one of the PCC cars heavily remanufactured by PAT in the 1980s and renumbered into the 4000-series. This car was rebuilt in 1987 using 1949-vintage PCC car 1767 as a core and was retired in 1998. For a few years it was stored in Columbus behind a semi-derelict industrial facility on West Nationwide Boulevard (I recall seeing it there in 2002) but then that facility got renovated and sometime in the mid-2000s it showed up in the parking lot at 2401 West Superior Viaduct in Cleveland.

UPDATE: Many thanks to Wesley Paulson and Dave Hamley for getting to the bottom of this one. Car 4006 was indeed moved back to Buckeye Lake, Ohio, where its owner is based, in August 2021. There it joins fellow 4000-series cars 4011 and 4012 along with a collection of other miscellaneous cars.