Why ask? I, for no apparent reason, began to draw cars. Then came a break, I thought that this simple hobby without consequences. But that's no problem. My enthusiasm began to show itself again and again. Many I have to say that their ideas can be sold and the like. But how? I have no cluehow and where to go! If someone can help me or give, or to cooperate with me.
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Normally designs will be made into models, there will be air flow tests and also a study to see about stability and safety.

The plans are then marketed to a auto dealer.