Yep! That's it in the second link. It sounded way cool at the time, in a Jetsons sort of way, but it would've been a kludge and obsolete the day after Camden Yards opened.
The Cubs were actually in on those talks too. It didn't get very far, but there were a lot of moving parts in those discussions and the Tribune looked into it since they were being stonewalled on putting lights in Wrigley Field.
Strange days, indeed.