How do you get two ghost data in Mario kart super circuit?

To unlock two ghost data in Mario Kart: Super Circuit, you need to complete the Time Trials mode for each track. First, race on a track and set a time, which will create your ghost data. Then, to get a second ghost, you can either race against your own ghost or download a ghost from a friend's game or other players who have uploaded their times. Make sure to save both ghosts to have them available for future races.