Of course, they still couldn't buy the 240-mph beast because it wasn't road legal for US shores. Why is the Speedtail drawing on these two models? This auto is 5.2m long, half a metre longer than the P1, but it is slimmer.
And indeed this is McLaren's fastest vehicle. The plug-in hybrid had a combined 903 hp. Due to a carbonfibre body, the Speedtail weighs 1,430kg. It will rocket its way from a standstill to 186mph in just 12.8 seconds. For comparison, the P1 achieves the same feat in 16.5 seconds. And the engineers are only just getting started.
The newest member of McLaren's stable has been unveiled, passed down the crown from the famous 26-year-old F1. Once that's done, the highest point of the auto is just 3.7 feet - 44 inches - above the roadway.
On the rear, two active ailerons are constructed out of flexible carbon fiber to remove turbulent air from slowing the auto down when going flat-out. So it's fair to say it's taking it seriously.
The rear features a one piece carbon fibre clamshell.
Noticeably absent are rearview mirrors and sun visors. The wing mirrors? Gone.
Oh, and those wheel caps mounted at the front, described as carbon fiber front-wheel static aero covers, remain fixed in position as the wheels rotate, with their flat surface smoothing airflow around what would otherwise be a turbulent aerodynamic area.
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While the F1 weighed in at an amazingly light 2,500 pounds, the Speedtail unfortunately adds another 1,000 pounds to that tally. This gives the material a shimmering appearance that can have a variety of colors. The interior is covered in soft and expensive, but lightweight, Scandinavian leathers.
McLaren revealed its ultimate Ultimate Series vehicle on Friday, offering details only hinted at before. Those are the (now patented) rear ailerons. Like the rest of the powertrain, its precise specification remains strictly under wraps, although we learned that it'll use wireless inductive charging rather than a messy plug and that it will not provide the Speedtail with any electric-only range. The P1 also used a hybrid albeit with a lower 916hp of power.
Elsewhere, the vehicle gets the same aluminium hydraulic RaceActive Chassis Control II suspension as the Senna, although with only two modes - Sport and Comfort - available alongside the Velocity setting. Some visible parts of the auto are made from a special carbon fiber with a very thin layer of titanium fused to it.
According toMotor Authority, McLaren wasn't keen to plug in the necessary bits required by US regulations to make the hypercar compliant for road use. The driver's seat has a special "directional" finish that makes it easy to slide into but also helps hold the driver in place during hard turns.
Like the F1, these are set back and fused directly to the tub.
About one-third of the Speedtails are headed for North America, the spokesman said.
The vehicle you see here - and that early depositors saw recently in a London preview - is done up in Speedtail Silver, "a Nano-metallic, "molten-effect" paint" that, yes, is only to be had on this auto. It lines the luggage compartments, as well - of which there are two, providing 162-litres of bag-carrying space (enough, McLaren says, for a couple of bespoke cabin bags). The number is significant: that's how many F1s were sold.