vvomble

perhaps i'm missing something here:

I start i build a factory and a research facility i go to the warehouse and get prototype plans for 5hp open top small car,

I then take the drawings out of the draw and start production.

along the way hiring the workers obviously.

when i start production it tells me i have no parts but i can't make parts just off the prototype plans.

i don't get how i actually produce a car


any help greatly appreciated

thanks
Ben