to go down the front straightaway

20:22 Aug 28, 2019 

maybe part of the test is to see if you are going to request the video ... although assuming that they would think of such level of "testing" would be a very brave assumption for most agencies.

Anyway, this section:

You can see going down the front straightaway,
all the arms in the air, they're just cheering you on.
It's just so exciting.

is clearly narrated from the viewpoint of a racing driver.

A pretty strong clue: the only way the crowd could be "cheering on you" is if you are on the receiving end i.e. the driver.

17:51 Aug 28, 2019 

@Daryo
It's a test I've been asigned to. I don't usually do subtitles without watching the video. The video makes all the dirrerence.

07:13 Aug 28, 2019 

talking about his experience / the story of his life? Kind of monologue?

06:58 Aug 28, 2019 

A man called Daedalus.
He was the first person who built machines with the power of the gods. The word "fan" is a derivative of fanatic,
which is a focus, a belief, and a worship.
You can see going down the front straightaway, all the arms in the air, they're just cheering you on.
It's just so exciting.
The track becomes, in many ways, a religious experience itself.
People have seats where their families always sit, it's kind of like the pew in church.
The South, we didn't have Major League Baseball, we didn't have the Yankees or the Dodgers, we didn't have the Green Bay Packers.
So Richard Petty became your guy.
David Pearson became your guy.
Buddy Baker became your guy.
And Dale Earnhardt, Sr. is still a mystical, mythical guy to a lot of people.
Our fans fight for us every day.
They feel like they're part of this club, this family.
Every Sunday, they put on their hats, they put on their shirts, they will buy a ticket and drive 600 miles to a race.
It is their calling to be there.
We're going up the mountain, into that place in the mountains.
And my whole family is from a town on the other end of this mountain over here called Ellijay.

06:46 Aug 28, 2019 

a bit more context - where are these characters during this dialogue?

If it's a dialogue at all - sounds to me more like an off-screen voice commenting.

"they're just cheering you on" => that would be the viewpoint of the leading driver (or of a favourite of the crowd) during or just after the race.

Any more info?

I hope that it's not the case that someone had a stroke of penny-pinching genius / the bright idea to give you the film dialogue and nothing else - no script nor the movie.