PUZZLE 168 Starting Line

'It's time, everbody!
The race final is about to begin.
Good luck to you all!'
This is the starting line-up of the race.
The cars each have different letters on them.
Can you look at the start area and work out which letter goes betwen 'S' and 'A'?

Hint 1

If you get caught up in the letters allocated to each car, you won't find the answer.

Hint 2

When the race starts, the letter in question will be abscured from view for a while.

Hint 3

It's the start of the race.
This is an important point.

Super Hint

Look more closely at the starting line.
The letter between 'S' and 'A' is right there.

Answer for 'Starting Line'

The answer is 'T'.