Hydroforming of car chassis components for mass production vehicles and/or any vehicle priced such that you can amortize the cost over x period is where it's at IMO.
Beyond that, you have traditional jig/fixture builds as Fred stated, building welded chassis assemblies. Art Morrison for example?
This looks to be a demonstration of 'capability', much more than one of practicality. Something to get the mind wondering about future possibilities... which is not necessarily a bad thing. It got me into this profession. :)