Animate a Train along a Track
 

Hello everyone,
as said in the title I would like to animate a train with several carriages following a train track. But I just dont get it to work. My guess is to use some sort of path-animation. But how to tell all the carriages to stay to gether?
Has anyone a good idea how to do this? For any help I would be very gateful!

Jakob

PS: I am a total Maya Noob. So please be patient with me ;)