It is a little funny that car manufacturers have figured this out in a silly way.

Basically, a lot of new cars are very simple and elegant when you open the hood, showing clearly fluid reservoirs, a sculpted engine, and some elegant plastic covers to tie it all together.

... but basically the plastic covers are a "second hood" with the ugliness pushed down one level.

I will say that powermac G* and mac pro systems have always been kind of cool - they were made to be opened and there were always really nice engineering details.

Things I remember are the carefully stored hard disk screws for slide in drives on the powermac G5. Or the pci express card locking systems. Or the case opening procedure on any of the systems.

Somewhere in hell, there are a bunch of automotive engineers doing difficult maintenance tasks which they designed into vehicles such as bleeding the brakes on Ford Escorts, or spark plug changes on AMC Javelins (it actually required unbolting the engine and using a hoist to get at the last sparkplug).