Given that we have no certainty about the make/model of the car, davel has been flogging a non-visibility point to death ad nauseam for no purpose whatsoever.
The following is for any poor bar steward who has waded through this pile of tripe, and is still awake.
Our Megane is 1,400 cc. Its speedo goes from 0 to 240kph. I feel confident that our car would not have clocked 200kph in 2007, even going downhill on the A22.
The 120kph point is slap bang at the top of the speedo, and is clearly visible from 2 seats in the rear. Only someone optically challenged could fail to see and read the 120kph point, or the 200kph point, or any other reading you choose.
Alice claims the 1,600cc Megane spec shows it could not reach 200kph. That strikes me as surprising, but I see no reason to check it. Unless we have a modicum of certainty about the car, Megane capability is somewhat of an irrelevance. We might as well debate Ford Anglia capability. Hang on, that's Harry Potter territory. Let's not go there.
The McCann version morphed from a turn then a 200kph+ dash on the blog, attributed to 4 May 2007, to a U-turn and a 120mph+ dash in Kate's book, published in May 2011.
To support the former, the A22 suffices. To support the latter, nothing suffices.
And I posted yonks ago that why supporters would choose to deny these basic facts mystifies me. It still mystifies me.