 This is a rare example of batteries tech leaving the lab, if you like. And they said themselves in the laboratory, they were able to charge the battery from zero to 100% in six minutes. But when they actually got it out and got it into a car and onto a road, there were all kinds of real world conditions that played in. So here in the UK, there was a heat wave. So it was much hotter than it had been. And then there was an issue with the cooling system inside the car they were using.