After the likes of P1 and Senna, the Speedtail is the third member of McLaren’s Ultimate Series. It comes wrapped as a hybrid hyper grand tourer and it recently proved its mettle in a straight line, where it hit 403 km/h (250 mph) more than 30 times during pre-production testing.

Now, McLaren was initially very coy on specific details regarding the Speedtail. However, we now know that the Speedtail mixes a 4.0-liter, twin-turbo V-8 with an electric motor or “parallel hybrid system” as McLaren calls it. What we also know is that it has front wheel spats and that Chris Harris would rather have the Speedtail than the Senna.

How mighty is the McLaren Speedtail?

For starters, McLaren did unveil some data about the Speedtail right off the bat. We knew from day one that it packs 1,055 horsepower and 848 pound-feet of torque. We also know it can reach a top speed of 403 km/h (250 mph), while the 0-300 km/h (0-186 mph) sprint takes just 13 seconds to completion. If that’s the case, then we’re guessing the 0-60 mph zap could come in around 2.5 seconds or so.

McLaren Speedtail specifications

McLaren also says that the Speedtail’s battery pack “has a power density of 5.2 kW/kg, which is the best power-to-weight ratio of any automotive high voltage battery system.” It’s hidden inside a sleek 5.2-meter-long carbon fiber body (that’s roughly 17 feet), and deliveries are expected to kick off in February 2020. Oh, and McLaren plans to build just 106 units, each priced north of $2.2 million.

Technicalities aside, the Speedtail is so awe-inspiring that TopGear pitted it against the F35 jet and released a preview of the whole shenanigan. See the video above. Other than that, TopGear’s Chris Harris had the unique chance of honing the Speedtail on track and as usual, we was able to offer some driving impressions.

Now, that fact that the Speedtail is pretty similar to the 720S on the track shouldn’t be to surprising. I mean, the Speedtail is basically based on the 720S and we’re sure McLaren thought about the fact that some owners won’t buy one just for its straight-line quickness. Remember, the Speedtail is a GT first and foremost, so it must be apt at taking the owner on a long trip around the French Riviera and let him have some fun when the road gets twisty.

That said, check out the video below for more of Mr. Harris’ conclusions on the McLaren Speedtail.