Top Gear is not a serious programme, it’s a comedy programme. It’s not real.
When Jeremy Clarkson says “literally” on Top Gear, he doesn’t literally mean “literally”, he means “figuratively”. This is what’s known as a comedic device – those who are in on the joke of Top Gear realise that he knows that when he says “literally” he means “figuratively”, and that he knows that they know. It’s part of the joke.
Asking Jeremy Clarkson “is it real?” is more disingenuous than him responding that it is, in fact, literally 100% real.
Oh, yeah, and the preceding blog post may have contained spoilers, so spoiler alert.