You can press 2 to save the replay and then go to main screen - Replays - MPR and run it. Note that after you save a replay, it stops recording until next race / qualifying starts.
Quote from Flame CZE :You can press 2 to save the replay and then go to main screen - Replays - MPR and run it. Note that after you save a replay, it stops recording until next race / qualifying starts. Or he can just open a second instance and play the temp.mpr file, so it does not stop recording