A method of validating a design for a graphical user interface of a motor vehicle includes creating a tentative design, and/or a few drafts or prototype for the graphical user interface. A blurred version of the tentative graphical user interface design is produced. The blurred version of the tentative graphical user interface design is tested for readability and whether the overall GUI design is suited to be perceived at a glance. If it is determined that the blurred version of the tentative graphical user interface design is not readable or understandable, then the graphical user interface is redesigned and the producing and testing steps are repeated for the redesigned graphical user interface. After the blurred graphical user interface design has been determined to be readable, then a higher fidelity graphical user interface is made.