It wouldn't work very fine at all. Gliding at low speed a minuscule payload 50-100 miles that you have to transfer to the airport at the departure point then fr

It wouldn't work very fine at all. Gliding at low speed a minuscule payload 50-100 miles that you have to transfer to the airport at the departure point then from the airport at the destination will almost certainly take longer and be much more expensive in terms of infrastructure and worker cost than just driving it point to point in a delivery vehicle. It's also highly weather dependent, much more so than powered aircraft. If you're really in a hurry you need a helicopter. Then pay your indulgences to some politician's shady "carbon credit" corporation if you feel guilty about your climate sin, or use a carbon-neutral manufactured kerosene for it, and then you're even greener and still cheaper than the unpowered spruce goose idea.