Red Bull's Mark Webber faces a 10-place grid penalty at the Korean Grand Prix after being reprimanded for hitching a lift on Fernando Alonso's Ferrari at the end of the Singapore Grand Prix.
The reprimand was the Australian's third of the season, which means that under Formula One regulations he will collect the automatic grid sanction. He had previously been reprimanded in Bahrain and Canada.
Alonso was also reprimanded for driving the car "in a manner which could be deemed potentially dangerous to other drivers or any other person".
Stewards noted that two cars had to take avoiding action as a result.
Red Bull team principal Christian Horner felt the stewards could have dealt with the incident more leniently. "It was good for the show, it was good TV and it should have been dealt with by a fine or a slap on the wrist," he said. "What's a shame is that it's ended up in a reprimand and because it's the third it means a 10-place penalty ... perhaps in this instance talking to the drivers would have sufficed."
Webber had pulled over on the last lap after his car's engine ran dry of water and caught fire. After parking, he ran back to the side of the track and hitched a lift with Alonso.
The incident was reminiscent of Briton Nigel Mansell collecting Brazilian Ayrton Senna at the end of the 1991 British Grand Prix but it was also a risky gesture with other cars passing by.
"I was doing my in-lap, came around the corner and Fernando was there and I was really shocked," Mercedes' Lewis Hamilton said. "If Mark had been walking across where I went, then I would have run him over."