You can also spectate (and more...) from the Events -> Watch / Ghost / Crew / Spot option.
As the name implies, you can Watch/Spectate, but also Ghost, Crew (as in crew chief in NASCAR) and Spot.
Ghost is why it said configure controls Sasso, you can effectively 'join' the race but as a ghost car, as in they don't see you at all.
Crew needs some setup but allows somebody to control the pit-stop changes for another, all stuff that can be done via the 'F' screens, so fuel level, tape in ovals, and a variety of other stuff depending on car, but just done by another person which could be useful at times (rather than fiddling with that whilst trying to stay under the pit limit in an oval car with no limiter...)
And Spot allows someone (or multiple people) to spot for you, so they can give you information on another persons lap times etc
I really need to pay more attention to the options rather than just racing lol
I like the sound of the ghost option, will give that a try tonight.
When your in spectator mode can you see the drivers gears and throttle and brake so I can watch the fater guys and pick up tips?