Never heard it before either.
There is not even 1 documented WT7 car from Arlington known to exist.
We have only turned up 3 or 4 documented WT7 1970 cars in the past 19 years.
Oshawa , Baltimore and PMD specimens.
WT7 didn't go into effect until around mid-November.
Earlier cars would have to have been equipped with time-warp devices.
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