What's the cruellest defeat you've seen in motorsport?

Abu Dhabi 2010, when Ferrari made the strategic error which left Fernando Alonso trapped behind Vitaly Petrov and unable to pass, losing him the world championship.

Mazda 787b getting banned

Colin mcrea in i think 2001, last rally of the year pretty much jad to finish to win another championship and he crashes the car

Jeff Gordon 2015 Homestead Miami. Last race of his career, chance at the championship that had eluded him for a decade.

Carlos Sainz (Sr.)&Luis Moya, 1998 British Rally, just had to cross the line to be champions, and 200m to the end the car just stopped.
https://www.youtube.com/watch?v=Sd_gj-3kz7A

https://www.youtube.com/watch?v=OT84-Jm1IuE

https://youtu.be/8gVQkucIQdI
That time when Ricciardo lost his GP2 title to Aleshin in a very last race. I think it was the hardest hit of his career, but that only made him stronger.

Nikki Lauda.

sorry XD

Carlos sainz vs colin Mcrae… Carlos car stoped before the finish when he was 1st… Colin just flew by

This one.