Jim Clark and Colin Chapman discuss tactics before Clark's fatal Formula Two race at Hockenheim in 1968.

There was something about this moment.

 

I paused the footage and took this snapshot.

 

As Colin Chapman leans in towards Jim Clark, the legendary racing driver's body language suggested he was not comfortable with the conditions or the tyres on that day.

 

The blue biro was my way of focussing on the troubled mind of the racing hero.