I've got a rack I built to use when I was still mountain biking that fit in the back of a pickup. But most cruisers don't have a quick release front hub, so that's out. I do have 2 different racks that I can use in the back of the truck that holds bikes upright, but neither locks to the truck nor do the bikes lock to the rack.
On all the time, I ride out every morning freecycling.....(you know, looking for roadside goodies.)...had 3 beater bikes on it the other day...
I agree about strap deterioration...that webbing stuff doesn't last forever in the grinding Florida Sun. maybe a conditioner.of some sort....
I drive over 50k miles/yr. and use the hatch all the time for work, so I can only leave the strap rack attached on weekends. I could fit a bike in the back (with some pain, thanks to Ford only selling a hatch and not the wagon version of the Focus that they sell in Europe), but I keep work stuff in the "trunk" area and it's annoying to remove (and not forget to put back for Monday). I want to get a sturdier hitch rack, but if I trade for the ST next, the center exhaust will be in the way. Roof racks are even more annoying with the noise and drag, so I only keep them on when I'm actively moving kayaks.