This is the ultimate incarnation of the third-generation Ford GT – and a homage to the Mk IV iteration of the original GT40, which won Le Mans in 1967. Fittingly, this new Mk IV is a track-only, pseudo-race car, of which just 67 will be built, at a price of $1.7m each. It shares its carbonfibre chassis with the GT road car and 2016 Le Mans-winning LMGTE Pro race car, but the brakes are new, the ‘longtail’ body is new and the EcoBoost V6 has been enlarged to 3.8 litres. Together with new turbos and a host of other engine changes, peak power rises to a plentiful 800bhp. Over to Top Gear Magazine’s Contributing Editor, Jethro Bovingdon, to see if this swansong is worthy of its name…