> Dell hopes that his tables will be used in workplaces for city planning as well as arcades.

As someone with a background in urban planning, these kinds of statements always convince me that nobody knows what urban planning entails.

Funny enough, at community meetings, many planners like to avoid realistic renderings of changes. For example if you want to give people an idea of what sort of size buildings could have under a proposed upzone, you don't want them fixated on the color of the brick facade in the rendering.

I can't really imagine a holographic display helping planning in any real sense beyond getting school kids excited.