Feeling hot hot hot.
McLaren debuted the Speedtail, the spiritual successor to its iconic McLaren F1, last year. It appears, however, the British automaker is still testing prototypes. They're likely dialing it in before customer deliveries begin next year. One eagle-eyed bystander, though, was able to capture video of a McLaren Speedtail prototype under duress. The car is stopped and there's smoke emanating from the rear. As the video progresses, one of the drivers appears to hit the car with an extinguisher of some sort.