What is the red, white and blue car online? What is the red, white and blue car online?

What is the red, white and blue car online?

The blue, white, & red Porsche 911 you see driving around is a temporary car. This is loaded when someone joins the server you are on and you are on track, it stops your PC using resources to load the car when you're driving and causing issues. 

To clear them, return to the standings screen, then press "start driving" again.