This could have been such a great DVD. Cars have been a mainstay of post-apocalyptic fiction for decades; just think of Mad Max, or the armoured taxi in 28 Days Later, or the convoys in everything from the Dawn of the Dead series to Resident Evil Apocalypse. Imagine what could have been, with Clarkson, Hammond and May making an extended challenge along the lines of the Namibia challenge, but with post-apocalyptic challenges and cars. It could have been magnificent.
Instead, we get this shoddy attempt; it has its moments, certainly, but much of it is just pointless. And the absence of Clarkson is glaring; while he can easily carry a show on his own, as his Clarkson DVDs show, the combination of May and Hammond needs the (strangely) moderating influence of Clarkson. They just aren't funny without Clarkson there telling them they're not, if that makes any sense.
It's a good watch, if you have a working fast-forward function. But I've watched it once, and now it's going up on Buy Used.