I don't think this would actually work; have you tried it, or do you know anyone who has?

The issue is the grid-tied solar. It looks for a grid signal, and sends power out to the grid. When you connect your F150's 240V bed outlet, that will look just like the grid, and if you're producing more than you're consuming the solar will try and send excess power to the truck. Maybe this damages the truck, maybe it just trips and shuts down, but either way your house goes dark.

You would need to write/build a controller. The dumb pieces are there, but you would need to orchestrate them.