This wonderful-looking thing is the McLaren 765LT and no, we've not gone and committed a typo - this isn't the storming 675LT reborn, but instead is the third in a modern-era Macca Longtail heritage that includes the mesmerising 600LT as well. This particular 765LT is based on the ferocious 720S and it wears a more extreme aero package that includes bespoke bodywork, a 5mm ride height reduction and increase in front track width by 6mm. A larger active rear wing helps increase downforce at higher speeds and when braking, while the front splitter and rear diffuser have been redesigned to work more effectively, too. Weight is down - no mean feat in a car made from a carbon tub in the first place - by 80kg when compared to the 720S, for an all-in kerb figure of 1,229kg dry. These gains have come from the ten-spoke ultra-lightweight forged alloys, held on with titanium bolts, and behind wheels the are the same carbon ceramic brake discs as on the Senna. Helper springs in the suspension brought another 1.5kg reduction and a bespoke centre tunnel shaves another 1.4kg. The optional carbon-fibre wings are 1.2kg lighter than the standard panels. Owners can also specify lighter carbon-fibre bonnet and doors to save yet more precious kilograms. Inside the cabin, the seats are carbon-fibre racing items that each weigh 9kg less than the regular sports seats that feature in the 720S. For the first time in a McLaren road car, the thickness of the glass in the side windows has been reduced, while the C-pillars and rear screen are formed from polycarbonate instead of glass. A lighter lithium-ion battery replaces the regular type, which saves 3kg, and McLaren does not fit air-conditioning or an audio system as standard. However, should buyers so wish, these can be installed. Powering the 765LT is an enhanced version of the 4.0-litre biturbo V8 known as the M840T, here sporting forged aluminium pistons, dry-sump lubrication, a flat-plane crank and low-inertia twin-scroll turbochargers, resulting in 765hp at 7,500rpm (hence the car's name) and 800Nm at 5,500rpm. That allows the 765LT to run 0-62mph in 2.8 seconds and 0-124mph in a scarcely believable 7.2 seconds. The top speed is 205mph. Each 765LT comes with a full titanium exhaust system that in total weighs only 10.9kg - a saving of 3.8kg to the one used in the 720S. It exits the rear of the car with a distinctive four-pipe design that makes the 765LT even more recognisable and it should sound glorious. As to price, no idea as yet, but just 765 examples (yep!) of the 765LT will be made.