Q1: Where can I access Car Data Confirmation?

You can access it on the Wangan Terminal. The instructions are: "Touch the Screen" > "Use the Banapassport Card" > "My Garage" > (Select a car) > "Check Car Data Confirmation."

Q2: I can confirm my data on the drive cabinet too, but are the contents the same?

The Car Data Confirmation Screen on the drive cabinet displays the same contents. It also reflects settings such as the transmission and BGM volume in the same way.

Q3: The rankings of my Time Attack records aren't displayed.

Your personal best time is recorded on the server when playing the Time Attack mode on the drive cabinet, but the rankings aren't displayed until they're finished totaling. Wait a few minutes before checking.