If you want some cars modelized in SketchUp take a look to 600v ;)
56 pages! https://www.deviantart.com/600v/gallery
an old interface of 600v



Not sure that the technic for SketchUp (+plugins Artisan or SubD) is completely adaptable to Moi but...
Native SubD inside Moi...


else you have also this! ;) (Free Vizcom ! ) (next version will have 3D! )
https://mailchi.mp/171557ac14e6/new-vizcom-10-release-check-out-the-updates-8377049