Dietrich Mateschitz has repeated his recent claim that Formula One's return to Austria in the near future is a "more than minor" chance.
Mateschitz has rebuilt the facility, having been demolished following its last F1 event in 2003, at the cost of a reportedly nine-figure euro sum.
It has obtained F1 homologation status, moving the likes of Michael Schumacher and Sebastian Vettel to admit they would like to see the Red Bull Ring added to the calendar.
Bernie Ecclestone said in Turkey that a return to Austria is "possible".
But Austrian billionaire Mateschitz told Kleine Zeitung: "If you look at the new F1 circuits, the ones that came recently and the ones that are coming, one has to say the probability of Formula One returning to Spielberg is more than minor."
Triple world champion and Austrian Lauda agrees that the chances are small, but he said: "There are several obstacles to overcome, but, firstly, no one knows what Mr Mateschitz is planning."