Reclaimed Pallet Hotwheels Loop

my 3 year old son and I were talking the other day (you know those serious daddy/son talks) and the subject of team hot wheels came up. (yup a boy and cars) so he told me, "daddy, I need a Team Hotwheels track, you build it?" as all good daddies that would rather build something instead of pay hard earned money for it, we went out in the garage to see what we could build.