B-model and parts inventory for the 8070 Supercar

Live images of the 8070 Supercar have started appearing. Eurobricks users "junglistjoey" and "patey" have bought Supercars and shared some new photos of the set's box, parts, and inventory.

We can now see that the B-model instructions aren't included in the box and instead must be downloaded from the Technic site, and what the Hot Rod B-model does. As we already knew, it has steering, suspension, a V-8 engine, and opening "suicide doors". From the back of the box, we can now see the doors, like on the A-model, are opened by the Power Functions motor (although both at the same time, not individually). Also, the main novelty is that it also has a motorised convertible roof, actuated by the same motor. The two functions are switched from a lever by the steering wheel.

From what I could see, the inventory doesn't include any relevant new parts. I was kind of hoping mLAs would be used for some of the mechanisms, but it appears they were achieved using only "traditional" construction methods.

It includes, among other stuff, four black Technic Steering Arms with 4 Ball Joints and their corresponding Technic Steering CV Joints, which are always good for MOC's. There is, however, a new part I have never seen before...

It appears to be designed to fit on the existing CV Joint. Maybe it's a simpler/cheaper alternative to the Steering Arm with 4 Ball Joints, for suspension assemblies where steering is not needed. But the set already comes with four Steering Arms with 4 Ball Joints, one for each wheel, as well as four CV Joints... so where is this part used in? The only explanation I see is that either the A-model uses one kind of suspension assembly, and the B-model uses the other.

Not much time left before this beauty reaches all hands that are waiting for it!