Hate to point this out, but your argument appears to be flawed:
Quote from the show (which you quoted, emphasis mine).
"...but then, although Tesla say it'll do 2 hundred miles we worked out that on our track it would run out after just fifty-five miles."
And your implication appears to be that this translates to everyday driving (where the Tesla gets a range of ~200 miles).
My point is that they specifically stated that they 'worked out' its range (easily meaning 'calculated' or 'extrapolated', among many other possibilities. Thus it is vague and not as definitive as many people appear to be reading it as.) Also, they tested it on their track, which is obviously not ideal for range, but since the Tesla IS marketed as an electric sports car IS an important piece of information to know (as believe it or not, many people actually enjoy to bring their sports cars to the track!) I can't assume that most people that watch the show know things about cars, but I imagine a decent percentage of their audience does, and can recognize that driving on the track does not equate to 'daily driving'.