how to Stack + Deform mesh along a path?

For my current project i need stack + deform a mesh along a path.

I found a video where is shown what i need.
Thats the video: NinjaCamp III: Spline Roads | Unity Blog

The problem is where to get this?

It looks like that project is going to be published in the EasyRoads3D packet for 49$.
The problem is that the EasyRoads3D need a Terrain to work.
The project is designed for the Ipad2 and terrains + Mobile = does not work.

Has anyone a idea where to find something like in this video or got a idea how to build it for at my own?

There is a new asset in the asset store that will do what you want and a lot more MegaShapes « MegaFiers