Six things you need to know about the one-tonne McMurtry Spéirling

The Spéirling holds the Goodwood hillclimb record at 39.08secs. This second gen car is faster still as it has more mechanical grip from those wider tyres. How much faster? “Wait and see” is the official line.

The second generation prototype weighs just over a tonne, but the final car is likely to climb to over 1,200kg. Not as light as you expected? Blame the batteries rather than the full carbon construction. Still, name us another EV that only weighs a tonne. We’ll do it: the Dacia Spring. Which has a max of 64bhp.

This is the second generation Spéirling - dubbed 'Pure' - and it’s grown from the first prototype. It's now 80mm wider overall, with off the shelf slick tyres 50mm wider all round, wearing 270s at the front, and 300s at the rear.

It's still a prototype and it will change before it reaches production. The wheelbase will be increased 80mm to liberate space for a 100kWh rather than a 60kWh battery, and free up some storage space behind the driver.

Although intended for amateur use, the Spéirling features full racecar tech, including an F1-style rear crash structure. There’s a lot going on at the back: fan exhaust, charging port, and a rearview camera.

There is conventional use of aerodynamics – not just the rear wing, but a front splitter and inlets to channel air to cool the brakes and motors. Underneath, some air is channeled around the suction skirt.