You will find a lot of CAD screenshots in the Caterham CT-05
thread and Twitter
! This is probably the most comprehensive collection of CAD screenshots relating to an F1 car.
You will also find CAD screenshots within the Honda R&D Technical Review F1 Special
although most images will be of individual components but interesting nevertheless.
Mercedes is also starting to reveal some of their CAD designs on Youtube in amongst short videos, for instance the suspension design and suspension motion kinematics of a recent car are revealed in the video below.