I got a big promotion at work in 1988 so my wife bought me a Pocher Mercedes 1930's Cabrio £220 at the time and about two feet long built.
I built the engine, gearbox, steering and the whole of the metal chassis, brakes, hand brake and the 6 spoked wheels, each having approx 100 spokes, rims, spoke nipples, threaded centres for the knock-off three eared centre caps etc so a complete rolling chassis where all of the moving parts worked. That's when it all stopped. The interior was two seats with a platform onto the floor, seat springs, foam seat padding and leather look upholstery. Those 5 or 6 pieces of trim had to be fitted to the seats and stuck together, but there wasn't enough seat material to turn over the edge to get the proper seat look, it was all rough corners.
Over a period of years the chassis sat in the box, tyres fitted, now flat at the bottom and the foam seat pads and leather-look upholstery has fallen apart.
I have though been lucky to by an interior pack and have seen someone on YouTube renovating a Mercedes like mine and used expanding foam to fill the tyres out to fit correctly, so I might have another go at the interior, paint the body fit the brass door hinges with the brass screws, and also assemble and fit the window winders, and door latches and the brass piano hinge along the two bonnet sides and fit the complete body!
But when that will be is anyones guess. When finished though my wife will buy a hand made wood and glass display unit to put it in and display the model over the fireplace. That's the only one allowed!