so now suspension as a whole is complete next up i think im going to do the doors so that i can open and close them again this is done through the use of expressions

so following similar guidelines before make the controller and place in the desired area ideally near the object you want to influence

then depending on how you've named you groups add the expression so that when you move your controller along one axis the object transforms on another axis in my case:

Lft_door_grp.rotateY = -Lft_door_ctrl.translateX*15

notice the "*15" at the end this is because i dont want the controller to go further then when my door rotation is complete (again fortifying this in the limit info editor from attribute editor

so now ideally your door should go from this...

to this....

and there you have it a moving door