>>6078916I don't use LDD or anything like that, I just start playing around with an idea and see how well I can replicate it outside of my imagination. The cars are mostly just SNOT pieces for the bodies and Mixel joints for the rockets. Like this pink car, that 2x4 gray brick in the back is one of these
http://www.bricklink.com/v2/catalog/catalogitem.page?P=6061with the 2x2 cylinder stacks mounted sideways using these
http://www.bricklink.com/v2/catalog/catalogitem.page?P=44728