Just type in the ****ing date and time for ****s sake and you'll have the air density...
"none of them "include exponential speed"
air resistance force: F = cdA * rho/2 * v^2
rolling resistance: F = croll * m * g * cos(alpha)
croll being the rolling resistance coefficient and m being the mass of the car. And yes, rolling resistance is nearly linear (mass "increases" when having downforce, the Chiron SS however nearly has none with all spoilers hidden).
"LOL, so which one of the two?"
Very first comment.
"P = CdA * v^3 * rho/2.
Knowing V=431km/h=119.7 m/s, P=1200bhp=895kw and rho@15C=1.225 kg/m^3,
we get a CdA of 0.85.
Therefore, for the Veyron SS to reach 490km/h you need 1307kw=1753bhp for
overcoming the drag alone from 431kmh to 490kmh. Then you have to add:
Rolling friction term, which linear with speed, and dynamic rolling resistance term, quadratic with speed."
And the last one:
"most of them can only be estimated experimentally and your 98% claim for air drag is totally unsubstantiated"
Taking the other equations from the driving resistance forces, you'll come up with well over 8000N for air resistance and ~200N for rolling resistance, the nearly inexistent (according to Andy Wallace in Shmees video) downforce adding to the weight being ignored. So yes, that makes 97.5% for air resistance ;)