I built this over the weekend. I'm pretty happy with how it turned out. I made a couple minor modifications. I used 8 foot boards instead of 10 (I have a tiny hatchback). I still only used 11 pieces of lumber, I just made the smaller slats 24 inch (instead of 25.5) so each board was one big and one small and I made the 2 medium boards 27 inch. I also put the back board vertical instead of horizontal for a little more support, I don't see any reason why to make it differently, its still deep seating and fit standard cushions from Lowes. I made mine in redwood which looks very pretty with all the different colors and patterns in it.