Because, why not?
Here is a render of a pickup based on the Audi A4. The chances of this happening, close to zero, but its fun to look at anyway.
It would be luxurious, and you could definitely cart quite a bit of stuff with you in the bed. You wouldn't be able to cart your kids around with you though as there is only two seats in the cabin. In my opinion, it does look very nice.
What do you guys think of this imagined luxury pickup?