I watched this video on youtube last night on modeling an automobile from scratch in 3DC. And IMHO it is the most useful video I've watched to date on 3DCoat when it comes to hard surfaces.
Modeling a spaceship or raygun IMHO is not the same thing as modeling a car.
And I'm not knocking other 3DC videos as they are many of fantastic and helpful ones on youtube. But so few of cars.
Sadly the author of this video does not do audio, I suspect it is probably due to an English language issue...