CT is a first principles design that's all about form following function, more than any other production vehicle ever made. It matters for investing because this is the fundamental reason why no one can compete with the specs and functional utility of CT without ripping off the design concept with basically an exact copy.
Franz Von Holzhausen said as much in his recent
interview with CNBS.
The other huge advantage of the wedge shape and structural skin, which Franz did not mention, is the superior strength-to-weight ratio of that geometry. The truck's triangular shape makes it essentially the structural equivalent of a simple four-post truss bridge. Triangles are strong. Putting the structural mass on the exterior of the vehicle also helps majorly with stiffness, especially torsional rigidity. Modern aircraft are designed with exoskeletons for this very same reason: it's lightweight and provides a sturdy skin for impact resistance.
This wedge exoskeloton design is physically required to achieve the crazy 3500-lbs payload rating the CT has without cheating on vehicle weight or sacrificing range or other important specs. 3500 lbs is about double the payload capacity of a comparable F-150 with a crew cab and 6.5-foot bed.
Connecting the Dots put together a fantastic presentation in this video going over the engineering of the structure that everyone should watch if they want to understand the physics of why the Cybertruck will dominate.
The aero benefit is huge too. Aerospace engineer Justin Martin did a CFD simulation after the reveal and found that it was in fact very slippery. Elon responded that the drag coefficient could get down to 0.30 with enough optimization. The main reason for this is that CT's side profile is basically in the shape of an aerofoil like an airplane's wing if it had to be planar. This makes up for the disadvantages of the sharp edges and the net result is the CT might be the most aerodynamic pickup ever, with only the Rivian R1T coming close.
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