The book example for chapter one has an example of creating a dynamic car (CarBuildProvider.car)/EvjenCar. The download code does not show an example of actually instantiating EvjenCar and I can see no magic way to do this - the compiler complains (correctly?) that the type doesn't exist. Can anyone help?

By moving the CarProvider code out of the App_Code dir and into a separate Class library project - and then moving the created dll in the Bin directory, all is well.