Thank you for your comments.
I've seen that technique many times before. So it's not completely my idea.
And the steering system is not perfect. Sometimes it bugs.
Thanks for your kind words .
In my dioramas I use a simple concept - two fractions. The bad one have relatively high technology (underground tech labs etc.), cruel leader who wants to control the whole world. And the second one is Resistance - the rest of humans who want freedom and peace. They don't have as good technology as their enemies.