Looks like I have sparked a bit of a debate
I wasnt even thinking about “class A” when I made the model.
The early part of the process is here.
I modelled the main body as one piece, then cut out the cockpit profile, door panels, bonnet panels etc working over the top of the Pointcloud.
Then offset those surfaces inwards to create solids, then used the solid _FilletEdge command to create the rounded edges.
The guards, grill etc were SubD.
I will sit down and do a start-to-finish tutorial on it one day.