https://steamcommunity.com/app/591370/discussions/0/12906913...Copied from Steamuser "grey1209" who wrote it in the discussions copied above:
Easy way:
New Game - Mega Factory, pause game, take a loan, build a line:
Production Line
3 Chassis Assemble
6 Fit Body
6 Paint
4 Fit Engine
3 Fit Accessories
Fit Electronics
Quality Check
Export
Then set Super Speed, and wait about 13 ingame hours...
For screenshots check the discussion. Worked very fine for me.