Some cars leave a paper trail; the Lotus 99T left a name and a place in Lotus's list. What follows is what can be said with a source behind it. Gérard Ducarouge (Technical Director) / Martin Ogilvie (Chief Designer) / Mike Coughlan (Assistant Chief Designer) / John Davis (Head of Aerodynamics and R&D) / Tim Feast (Chief En drew it.
The story
The Lotus 99T is a Formula One car designed by Gérard Ducarouge for use by Lotus in the 1987 Formula One World Championship.
What is underneath
900-1,000 hp @ 11,000 rpm is the published figure. It weighs 540 kg. Work it out per tonne and you get about 1667 horsepower — hypercar territory, where the limiting factor is the tyre, not the engine. The wheelbase is 2730 mm. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Its place in the line
Its family tree is legible: it took over from the 98T; its successor was the 100T. Nearby in the Lotus catalogue sit the Lotus 100T and the Lotus 101.