Apparently Delta 2 was built , installed and operational for a short while .
Unfortunately Delphi 's major early investor , Exxon Enterprises , abruptly shut down Delphi in July , 1982 .
Apparently Delta 2 was built , installed and operational for a short while , but unfortunately Delphi 's major early investor , Exxon Enterprises , abruptly shut down Delphi in July , 1982 .