There's a lot of mystery surrounding the McLaren Speedtail hypercar, formerly known as the BP23. Details about McLaren's new Ultimate Series are still scarce, but we now know how much power it will produce. Speaking to Top Gear, McLaren's head honcho Mike Flewitt confirmed the Speedtail will have more than 987 hp, making it the fastest road car McLaren has ever produced.

While the Speedtail will be a hybrid, it will adopt a "slightly different" setup to the P1. "What we focus on are attributes rather than engines," Flewitt said. "I remember when we launched P1, people said we should have had a V12. That kind of missed the point – for us it was about what it did, and the character that comes out of it."