While I don't think it's intentional advertising to not show the car, it could be quite smart if they did.

Everybody goes goo-goo for a few weeks over a shot of the rear pod. Eventually talk will die down about it.

Once it does, suddenly a spy shot of the right front lower control arm pops up on the internet somewhere. It's potentially revolutionary but the shots a little hazy and there's all sorts of questions about whether it's fixed or if it articulates but nobody knows for sure. A few weeks go by and it dies down again.

Next thing you know, there's a partial shot of the battery retaining system and so on...