Thanks all for nice compliments. Nice to see that you like the idea.

I shall try to answer Ed’s question as good as possible.
The start of all is 4 surfaces, 3 made with network (side, front, back), one created with sweep (roof, frontwindow, bonnet).
After trimming the surfaces, I fillet the surfaces between front and bonnet, and between roof and backside.
Also the sides are rounded of. (I think I did that creating a blend since I could not get it right with fillet).
This way a kind of hull is created which is rather smooth.
Next step is to create a larger version of the hull at the bottomside.
Than I created blends (yellow) between the topside of the smaller hull and the bottomside of the larger hull.
The wheelarches (yellow) are blended to the hull.
After that the windows can be cut out of the hull.
Sorry I am not a great tut writer, but I hope this information is a bit helpfull for you!

Raoul