I watched him race about 10 years ago, at the Goodwood Festival of Speed, when my late pal and another great driver from yesteryear Peter Gethin was involved there.
Sir Jack competed in the same car he'd driven in his Championship years at the circuit. He lapped faster, despite being 40 odd years older!
When questioned by 'Murray' afterwards he replied with typical self effacing modesty,
'I think the tyres are so much better these days'
A true gentleman and a great man.