That's great. Second interview means they like you.If you have already taken the drive test then they are probobly calling you in to offer you a position. once they do that , if you accept, they will give you the date to start your orientation.I know they just had 9 drivers go through it a week ago and this past week they were on the road with there mentors.
So you will go through the same routine.
One week in the classroom and one week with another driver.Then they cut you loose.
Hope that helps.