I had a very similar experience myself this morning on the A417 heading toward Cirencester this morning. A lovely looking black 1.4tdi passed me going fairly quickly as I was pottering in my 1.2. It looked fantastic in the sun and immaculately kept so I couldn’t resist catching up, passing in the outside lane to have another look and then tucking in.
Sadly the driver didn’t seem remotely interested or even glance over so I slowed back down and he re overtook and sailed off.
It did remind me of two things though.
1) a shiny A2 still looks fabulous and (to my eye at least) not in any way dated externally
2) a 1.2 really does like to cruise at speed due to its leggy gearing. I very rarely venture above 65mph usually due to economy goals but it was effortless.