How to select the car I've installed?

[Mykhailo]

It shows up in the Opponent Manager, but not in the Player Info

 

[SteveMack]

It shows up in the Opponent Manager, but not in the Player Info

I haven't done this in a while so I could be wrong.
I believe you have to have the car you selected to be Active and saved to a Roster, if you google how to import cars into nr2003 or even make a Roster file in nr2003 you should come up with a video or tutorial that is easy to understand.

 

[MarkNR2003Fan]

It shows up in the Opponent Manager, but not in the Player Info

Check the .car file in question to see if there are any space bar characters in its file name. If there are, try removing them and reloading the game to see if you can select it then.