[aerohead]

Turns out that the LUCID AIR has the same R-R challenge as the Genesis.
The 'performance' tires are ' range-sapping,' and the only way the Lucid can achieve it's best mileage is to, lose the 21-inch 'performance' wheels & tires, and install the 19-inch aero wheels and LRR All-Season Pirelli P Zero 245/45-19 tires, all around. The wheels have been camouflaged with black paint to hide the fact that they're a low-porosity design, to reduce ventilation drag.
When Hyundai went to Bonneville to set a land speed record with the IONIQ hybrid, they deleted the air curtains, and installed MOON racing covers, with zero-ventilation.
This ventilation drag actually raised the Cd of a Tesla Model 3, tested in Germany in 2018, increasing as speed was increased by 10-mph increments.
It appears that, when automobile manufacturers now use the term ' performance' it means the opposite of what it would mean in aviation.
You get less for more.