Yeah this was pretty terrible. It's 90% fictitious so I don't understand why it wasn't funnier.
Props for Funny or Die for experimenting with feature-length videos, however it would have been better had they edited it down to 30 mins and tightened up the humour.

When Ayrton Senna describes winning a race like taking a powerful drug, you really believe him. Race after race, as he stands on the first place podium pouring champagne over himself, he has a look of pure ecstasy on his face. He loved Motorsport and he loved winning.
His team doctor recollected Senna's humility being so rare amongst race drivers, and you can sense his personal and professional growth as the film progresses. It drew me in and left me gutted knowing where it ended.

This movie is so great, I'm amazed I never saw it growing up. Modern action movies can't keep my attention like this one could, and this was the extended edition. I'm not sure what was left out in the theatrical cut, but each scene in this seemed essential.
Also, now I finally understand the context of "they mostly come at night... mostly".