As an engineer with aerodynamics experience this is the big thing everyone is missing...
First watch this:
https://www.youtube.com/watch?v=lnYp4srEooI
Then read this from the most recent RW article:
"Finally, with the bleat of an asthmatic-sounding air-horn, the runners set off, following a sleek (and exhaust-free) black Tesla pace car driven by a Formula One test driver whose skills are necessary to maintain a steady pace while attempting to stay consistently at least five meters in front of the pack."
Then look at this...
N.B. The effects will be reduced because the speed is lower and the target distance of 5m but the bottom line is that the TESLA will be giving a significant unfair advantage. Particularly with the massive timing structure on the roof.