so now i have a good amount of controls for my car i need a way to select my entire car through one click, this is done by adding a master controller that has priority above everything in the group hierarchy

this is a simple process first create a suitable controller that surrounds your entire car

I've moved the vertices a bit to fit around my car nicely but this is'nt necessarily a requirement it just looks nicer 

next up we're going back to constraints except this time we're using a point constraint unlike orient constraint it only affects one point to the other whereas orient affects axis moved

point constrain on all the axis the entire car including controllers to the nurb circle (group select in the outliner and make sure the controller is outside the hierarchy before constraining.