Just a little help here, Rob, as the truck nomenclature is confusing and many decades out of kilter:
the best-selling truck line is the so-called 1/2 ton. This is the F-150 (Ford) or 1500 (GM & Dodge). I believe Toyota and Nissan don't bother using the no-longer meaningful numbers.
3/4 ton is the F-250 (etc.) series
1-ton is the F-350
Ford also sells for the consumer market its 450 and 550 series - those are effectively exclusively for the full-time 5th wheel and superheavy campers. Beyond the 550 you need a CDL to operate in the USA. And from personal experience, an F-450 or F-550 not only are super-stiff in suspension (obviously), but super-expensive in insurance. We don't have to consider anything over the 1-ton market for TMInc, in my opinion.
The F-150 may be the single biggest selling vehicle, truck or no, in the US (I believe that's true in some of the past twenty years), but, in pickup country, it is regarded as not good for much. Easy to overload its bed, and can't pull anything useful (up to a lightweight boat; not much more).
I've been thinking quite a bit about a Tesla truck, and why it would have to be shaped thus rather than thus... and, although I've my opinions as to how it should perform, I haven't any concrete answers, yet, as to whether the standard configuration of a pickup's shape is the way a T-Truck should look.