Focal 1028BE - protecting speakers for a move

Don't even pack them.  Prepare a padded location and place them one at a time in the bed.  If you can pad 2 ok, otherwise make 2 trips.  Do it at a time when there is litttle traffic and drive like you have a warm pizza on your lap. 

Since you are only going a few miles, I would rent a bunch of blankets from Uhaul. Put a couple on the floor or bed of the truck and lay the speakers, front facing up with a blanket in the gap between the 2 speakers. Surround the pair with more blankets and packed boxes with some other stuff you are moving so the speakers don't move when driving. Don't put anything on the faces lying face up.

Lay them on the floor/bed of the truck?

Why not pad/protect all sides and between speakers as discussed, and stand them up, speaker feet/bases on the bed (listening orientation), with ratcheting straps securing the speakers to the walls of the truck?  Provide additional protection/stabilization during transport using layers of corrugated cardboard (flat storage boxes) between the speaker padding and the straps, and mattresses and/or other secured furniture to better hold in place.  

It's much simpler than I made it sound.