“Here in the USA, if I’m not mistaken, over the road vehicles require headlights, tail lights, brake lights, rear and/or side view mirrors. License plate(s) mounted and any emissions/safety inspections.”
When the time comes, they may bank on the “Low Volume Motor Vehicle Manufacturers Act of 2015”. So long as they produce less than 325 vehicles per year, they’ll be exempt from a lot of federal motor-vehicle regulations. This law was primarily aimed at the kit- and specialty-car market but could certainly apply here.