*Originally posted by Stan *

**Whatever, my original point was that top speed is not just dependant on how hard you can mash down the accelerator. There are a large number of different factors involved. **

just what are these mysteriously fleeting factors?

cars travel so slow that it's safe to say we can assume a standard(icao) atmosphere, inviscid (fricitonless) and incompressible flow....

then can we say that "top speed" is the state when...

thrust = drag = (blah)S*Cd*rho*V^2/2

where:

blah- some expression for the drag of the rolling friction from a tire at X psi and a function of the weight of the car

S- surface area in the freestream flow

Cd- drag coefficient of the body

rho- density of the atmosphere

v- velocity

thrust- net thrust avail (whp after drivetrain losses)

even when downforce comes into the mix the

*variables* are the same

people are mixing up acceleration and top speed. make up your minds and integrate/derive over 't'-time as appropriate

even if the car is on a grade, it just means one more pedestrian step to resolve the forces of the stupid thing

from a purely aerodynamic standpoint the higher the density altitude, the faster the car would go due to the reduced drag, however, the (ferrari's normally aspirated) engine would produce less power so it's a compromise