A former F1 racer walking around in his period overalls is uncommon, but spotting two slim and fit old Grand Prix drivers in their original disguise is as rare as hen's teeth!
Monte-Carlo residents Mika Hakkinen and Thierry Boutsen frequently meet up to watch a race together, in this case the Australian GP.
All suited up, the pair actually look like they could step into a McLaren or Williams and pick up where they left off...