Note that according to Mark Hughes the car tested in Silverstone and in the studio is exactly what Helmut Marko describes (also see his replies in the comment section):
https://www.motorsportmagazine.com/arti ... ame-again/
A slim vertical radiator inlet, sited low and hugging the chassis sides, exposed a simply enormous undercut for the front of the sidepod. That sidepod itself was way smaller than before and the whole rear bodywork of the car stopped very short, revealing lots of volume for the airflows to the rear wing and diffuser to exploit.
Hi Rick. Yes the computerised renders had a few fake details notably the radiator inlet. But the car at the launch - which I was stood about 2 metres from - was the car from Silverstone testing the previous day and was very much real. Albeit with a fake floor fitted which just had flat edges.