The more I look at this, the better I like it, despite it being a toy shot. :-) Besides the DPC colors, which do indeed "work" here, the angles are good and I really like the shallow DOF which is well done here. I trust you suspended this somehow and didn't just keep trying til you got the focus right? :-) More sixes than fives - that's a very good thing!
I honestly think considering it IS a toy (obviously) your score is really not bad. As melethia commented, lots of people feel. Toys - (outside of specific challenges I E toys, playtime, children at play, etc), score low! Maybe people feel they are too easy to set up, we kmow that is not true, but....
Otherwise, slightly soft on focus of car - background colors are great to me, idea and execution were very good.