Very impressive, your transporter with small cars! Nice details like the flaps that actually can be tilted I assume. Did you use the offical Lego LDD version which is limited to approx. 1000 bricks? Recently we also created our first car and caravan in LDD. The limitation of brick types was an additional challenge to create the desired design. We did order the final design and did build as you can see on our MOC pages.