Some folks are concerned that Aptera doesn’t seem to be doing enough “real-world” testing of the Beta. Most of Aptera’s testing is done through digital simulation with costly real-world test serving to verify and validate the results of the simulations. https://youtu.be/7VuIllmE1OQ
At times 00:15 through 00:19, the rear suspension can be seen from two perspectives. It shows an adjustable control rod passing through a hole in the rear suspension arm. This, of course, is for testing. I expect the production version to consist of a fixed length control rod, and a swing arm made of something less expensive than a massive piece of milled aluminum.