We're trying to cover a wider range of subjects in the magazine. Obviously not everyone will like every article... that's life. But we try to provide a wide range of stuff for you guys. The tractor feature is not a "model railroading" subject... it's not a train, it's a tractor. It's more closely related to a truck than a train. And the weathering techniques used on it apply to model cars. Yes, technically it's NOT a car, but the article has good information in it that can be used on any car model.
If we run a NASCAR feature we hear from the guys who aren't into NASCAR, if we run a Porsche feature we hear from the guys who aren't into sports cars, if we run a funny car feature we hear from the guys who aren't into drag racing... and so on. You can't please everyone every time with everything.
No matter what the subject, there are tips and techniques and ideas you can take from it and apply to your specific area of interest.
Don't worry, there won't be any boats or tanks appearing in Model Cars anytime. But I think the tractor article, while a little off the beaten path, was a worthwhile feature.
And as to the production schedule... WE'RE WORKING ON IT!!!!