Geiselwind is still going strong.
I think the truckstop just before the German border is still there, the one of the imfamous fire.
To get to Geiselwind from Aachen, I’d go across to the A61, South to Koblenz, across to the A3, South to Limburg.
Then across to Giesen on the B49 (I think it is) and down the A45 to rejoin the A3 to the East of Frankfurt.
You’ll still go down The Black Cat, although that sign is long gone, but you’ll miss the worst of the traffic jams at Koln and Frankfurt
There’s a nice little truckstop in Kleinostheim just off the B8. The next autohof is at j66, then there’s nothing until Biebelried. Then there are half a dozen, one every other junction almost, Gieselwind is j76. It’s huge now. Got a church, motel, several fuel sites, McDs, Burgler King and the olde stylee Toni’s resto that does proper German cooking and a few other options as well. There’s even a ■■■ shop, although I don’t think it sells ■■■ 