Virtual production allows for more flexibility and cost savings, battling the cons mentioned above. Traditional methods (including adding backgrounds in post/VFX) can also quickly add up in costs as they are charged per shot.
Good stabilised plate-footage of the road, specifically car plates that can be used for a variety of angles, is hard to come by. Traditional car plates are typically a fixed angle, limiting their usefulness on set when shooting the car from multiple angles. Existing libraries are not always up to date in terms of resolution and requirements and can be expensive when multiple shots are needed.