I was actually doing a photograph for an ad for Shell Gemini motor oil with a (hired) Porsche 911 Turbo. I owned a BMW M3 at the time. My PA had a big Honda road bike. I hadn't ridden one since I came off in 1976. However, what would you do if you had 4.5km of motorway to yourself for 3 days?
At one point a police patrol car stopped on a bridge and two officers made their way down the embankment to ask what we were doing. I said, "Get off my motorway - I've always wanted to say that to you policemen!" They had to laugh.
I am not very good on bikes names. I remember seeing John Surtees at the IoM TT in 1960 with everyone saying they had never seen a good Japanese bike! At approaching 60 years old, I am now begiining to suffer from the long term results of accidents I 'fully recovered from' in the seventies.
Back to diving - it's much safer.