OK, this is what I'm thinking we're looking at, the rear of the truck with a (hydraulic) cover over the bed, in its lowered state, and thanks to
@jdevo2004 for making me realise it with the images he posted. One thing that bothered me about the image Elon released, especially when it's lightened, is that the truck seems to be very low to the ground, that's why I'm thinking it's lowered.
Apologies for how rough this is, dimensions are all out, as is scale, I have a feeling it might be bigger. The bottom's all wrong and I didn't even hazard a guess as to what the front might look like. I've left the far side open so the wheel position can be seen.
For my money, what they have released looks great – a bit like a Lambo/Bladerunner lovechild, and I love it. I might spend time taking this into photoshop and making it look good, but I've already spent waaay too much time on this already.
I also agree with
@Pushmi-Pullyu when he says light which appears light blue or white in the drawing might in reality be red and if it's an LED running light strip, then it may be able to switch from red to white or other colors (which would be an amazing feature). It could all be red, then a portion of it could change to yellow for indicating (turn signals). It could also turn white for reversing.
Here it is in its lowered state in the foreground and higher, driving state in the background.