I used some webbed straps in my Camaro. It wasn't an extremely detailed solution, but it worked well and didn't look all that bad.

Actually, the straps were sections of a heavy black dog leash that my dogs had eaten the ends off. I did a little bit of stitching on them when I doubled the ends under so there wouldn't be any frayed ends showing. It also made a more stable base for the fasteners, which were some nice stainless cap bolts I found at a hardware store.