It just depends on how the CVT was designed. You can design it for highst torque at any rpm which will give you high efficiency and low mpg. Alternatively, you can just tune it to just have "highest gear" at all times for better mpg
you'd get 30% race distance out of the engine before it exploded more than likely...it wasnt built to just hang there at 12,000rpm for three quarters of the lap...you'd also have a job convincing renault to sink money into redesigning the engine to be more robust for an idea that was almost certain to get banned very quickly...
i would be interested in the times, what it differs; same care, one "normal" gearbox, one cvt the times, top speed etc... And just from watching and hearing, it mindf"435s... Just hearing a constant engine noist, tricking you in that the car does not accelerate although you know what is happening... Just from watching you dont see the speed growing up on the straights as it is normally doing just watching normal, but then you realise, when the enging revs up and scream in wide-bandwith... feels unnatural... and surely that is a huge different on what you would expect... Cost, etc... tha psychological effect, how you have to unlearn your current driving style is huge impact... yeah great engineering, but you have to unlearn driving logic at all and relearn accelerating... Sure they banned it... that is also ingabe footage... (suspecting Assetto Corsa)...