Britain's Alex Lynn stormed to an emphatic win in the second Formula 3 European Championship race of the weekend at Vallelunga.
While Lynn seemed in a different class to his opponents, it was a nightmare for his title-chasing Prema Powerteam team-mate Raffaele Marciello.
The Ferrari-backed Italian, leading the points, was stranded on the grid as the rear end of his car was shrouded in a plume of smoke (pictured below).
The problem was a burnt-out airbox, caused by the long holds on the grid before both starts so far this weekend.
His problem allowed Felix Rosenqvist, who started from the back of the grid after his qualifying dramas, to unexpectedly make inroads into Marciello's points advantage after charging through to ninth.
Alexander Sims made the most of Marciello's issue to get up to second at the start.
The T-Sport Dallara-Nissan driver zapped the Carlin Dallara-Volkswagen of Daniil Kvyat at the start, then head to fend off a concerted challenge from the Russian at the second restart, but held firm to complete a British one-two.
"If only races were like that all the time," said Lynn. "Our pace was really, really strong. I was using two new tyres and knew that Alexander wasn't, so I expected to be faster, but didn't expect to be that much faster.
"We changed quite a few things overnight and the balance came to us - a big thanks to the guys at Prema."
Eddie Cheever's good weekend continued, and the Italian improved further on his season-best result to claim fourth in his Prema car.
Team-mate Lucas Auer was behind, the Austrian having to work his way past the Fortec Motorsport machine of Pipo Derani.
Antonio Giovinazzi and Sven Muller were a little bit out of reach for Rosenqvist, who headed home fellow Swede John Bryant-Meisner.
With Kvyat unregistered for the championship, Carlin team-mate Nicholas Latifi picked up the final point for 11th, just ahead of Tom Blomqvist.
The first safety car was caused when Jann Mardenborough went off on the opening lap, while the second was precipitated when Lucas Wolf, who had just rejoined after a pitstop, hit the barriers at the Cimini curve.
There was a further incident when Felix Serralles crashed out for the second time this weekend, this time after being launched onto two wheels by Latifi at the slow infield left-hand hairpin.
It was a miserable race for the other Brits, with Jordan King retiring in the early stages and Harry Tincknell struggling home 18th.
Results - 22 laps: Pos Driver Team/Car Time/Gap 1. Alex Lynn Prema Dallara-Merc 35m18.375s 2. Alexander Sims T-Sport Dallara-Nissan +5.034s 3. Daniil Kvyat Carlin Dallara-VW +6.912s 4. Eddie Cheever Prema Dallara-Merc +7.834s 5. Lucas Auer Prema Dallara-Merc +9.095s 6. Pipo Derani Fortec Dallara-Merc +11.456s 7. Antonio Giovinazzi Double R Dallara-Merc +12.022s 8. Sven Muller Van Amersfoort Dallara-VW +13.034s 9. Felix Rosenqvist Mucke Dallara-Merc +15.645s 10. John Bryant-Meisner Fortec Dallara-Merc +17.872s 11. Nicholas Latifi Carlin Dallara-VW +19.862s 12. Tom Blomqvist Eurointernational Dallara-Merc +20.509s 13. Roy Nissany Mucke Dallara-Merc +21.888s 14. Mitchell Gilbert Mucke Dallara-Merc +23.226s 15. Michael Lewis Mucke Dallara-Merc +23.921s 16. Dennis van de Laar Van Amersfoort Dallara-VW +24.920s 17. Spike Goddard T-Sport Dallara-Nissan +25.042s 18. Harry Tincknell Carlin Dallara-VW +27.179s 19. Andre Rudersdorf Ma-con Dallara-VW +27.766s 20. Tatiana Calderon Double R Dallara-Merc +31.576s 21. Sean Gelael Double R Dallara-Merc +31.978s 22. Sandro Zeller Zeller Dallara-Merc +32.251s Retirements: Felix Serralles Fortec Dallara-Merc 7 laps Lucas Wolf URD Dallara-Merc 7 laps Raffaele Marciello Prema Dallara-Merc 0 laps Jordan King Carlin Dallara-VW 0 laps Jann Mardenborough Carlin Dallara-VW 0 laps