I did a TT on what can be quite a busy dual carriageway on Sunday morning. Did a turn at a flyover, and up ahead I saw an orange flashing light. I gradually caught him to see it was a combine harvester, followed by a small lorry carrying the blade. The guy on the bike in front of me nipped past in two goes. I was pretty wary about drawing out into 70 mph traffic on a bike, but after checking behind I managed to overtake both vehicles in one go. Then I came on a long slow uphill drag, I could sense him gaining on me all the time and didn't the bleeding thing then pass me, although the lorry didn't. Eventually over the top of the climb, round a slight bend and I picked up speed again, but had a bit of a hairy and vulnerable moment going past as I couldn't see very far behind. I got to the finish about 2 miles later, stopped in a layby and he gave me a cheery wave as he passed.