[Havoc]

>maybe TSLA just needs a V-hull to dissipate the force (by deflection, rather than absorbtion).

Vhulls are only useful for upwards blasts...short of IEDs showing up in California the concept is useless for a sportcar. Also...humvee doesn't have a vhull - prototypes aside. You're likely thinking of either the MRAP or some buffalo derivative.

[001sky]

Obviously not a "deep v" shape nor something blast resistant, perhaps but some form of deflective geometry might be helpful under the car. It does seem the force ultimately is going ^up^ as opposed to >in< . . .

[Havoc]

It might help in a couple of fringe cases like debris hits. You'd murder the aerodynamics though.

Pretty much every other area will suffer too - handling, aesthetics, fuel efficiency, manufacturing complexity, battery replacement etc.

Its just a horrible trade-off.