Hey, I didn't say it was a fake... I said it was
largly a fake
I have no doubt about the sound track... it's kinda my business so, trust me, you can't record that audio. Not now and certainly not in the 70s.
Try watching it with the sound turned down and imagine the camera at a height of 2 foot rather than 2 inches and tell me that the speed reaches 140mph at any point. I'm sure some of us have done 140+ (not on public roads of course!) and know what it's like. At those speeds you would be overtaking at a relative speed of at least 100 mph. The film doesn't show that.
I'm not knocking the film - it's a lovely view of Paris - I'm just saying that it's not quite what it seems.