I don’t know, but I suspect that to be rigid enough to support that wheelbase, with all that extra weight in it, the vehicle would have to be much heavier. I don’t think an F-150 or a cargo van is even a unibody. If you have to build it on a frame, your vehicle is going to have to get taller as well. Your taller, heavier vehicle no longer has the fuel economy you want… nor the price point.
… but it has a 15 inch longer wheelbase than a Toyota Sienna, because of that choice to put everything between the wheels. That’s the length that matters for the beam stress. Which, if I recall correctly, goes as the square of the length. Which is probably why minivans sit up on top of the wheels… which makes them taller. And being narrower and shorter (on edit: meaning vertically) than the minivan actually reduces the rigidity of that unibody.
Anyway, I’m not necessarily saying you can’t make it a unibody, but it’s going to have to be a lot thicker unibody, so you’re trading weight against height, with either one costing you in sticker price and fuel economy.
I don’t know, but I suspect that to be rigid enough to support that wheelbase, with all that extra weight in it, the vehicle would have to be much heavier. I don’t think an F-150 or a cargo van is even a unibody. If you have to build it on a frame, your vehicle is going to have to get taller as well. Your taller, heavier vehicle no longer has the fuel economy you want… nor the price point.
It’s smaller than a minivan in all dimensions, including length, and those are unibody.
… but it has a 15 inch longer wheelbase than a Toyota Sienna, because of that choice to put everything between the wheels. That’s the length that matters for the beam stress. Which, if I recall correctly, goes as the square of the length. Which is probably why minivans sit up on top of the wheels… which makes them taller. And being narrower and shorter (on edit: meaning vertically) than the minivan actually reduces the rigidity of that unibody.
Anyway, I’m not necessarily saying you can’t make it a unibody, but it’s going to have to be a lot thicker unibody, so you’re trading weight against height, with either one costing you in sticker price and fuel economy.