Should the new engine rules go in a favourable direction there's a good chance that a Porsche engine will be on the Formula 1 grid in 2021, after a break of exactly 30 years.
If it happens it will be the Stuttgart manufacturer's fourth time around in grand prix racing. The first attempt, as a full works team, was not without success - Dan Gurney finished third in the 1961 world championship and took a pole and a win in '62, before the team withdrew.
Over two decades later Porsche returned as a paid partner of McLaren. For a brief period the TAG-badged V6 set the pace, winning three titles from 1984-86, before the Woking team went with Honda for '88.