Camera following issue.

Hi,

I have built a rollercoaster track which follows a spline. I have built the coaster/cart and used the cloner tool to duplicate the carts. I have used the offset to animate the clones and wish to attach a camera so I can ride the rollercoaster from the view of the second carriage.
How do I go about this?

I have tried to use the align to spline tag and animate that but it rides faster through the course for some reason.

Any suggestion?