Audi has dropped the firmest hint yet that Formula 1 is on its radar, as rumours of a potential tie-up with Red Bull intensify.
After Red Bull said at the Spanish Grand Prix that its future in F1 could rest on a partnership with Audi, the German car manufacturer has now come out and suggested that there could be substance to its entry.
In an interview with British publication Auto Express that was published on Monday, Audi's chairman Rupert Stadler made it clear that F1 is far from being a closed door.
"In life you must keep things open," he said when asked about the possibility of Audi entering F1.
"We're already well stuffed with successful motorsport projects. But with F1, wait and see. It's an option for Audi.
"Not at this moment, perhaps. But it is still an option."
Audi's entry will need a green light from parent company Volkswagen, which is currently undergoing a management reshuffle caused by the resignation of chairman Ferdinand Piech, who was believed to be against any F1 involvement.
Until the road car company's situation has settled down, there is unlikely to be any commitment to F1, meaning a potential Audi entry may still be several years away.