Anyone (this means you, Bob) want to try to compute the frontal area of the Prime? I'm going to do so and wouldn't mind a few cross-checks. The ruler is 36" end-to-end near as I can measure. Heat distortion from the ground is going to make this a little challenging but we should be able to get close. Approximate distance is 215 feet, approximate equivalent focal length based on horizontal field of view is 1,400mm so this should have very little perspective distortion. HERE.
Aerodynamic drag force = 1/2 * rho * A * Cd * V^2. We can compute rho from a local weather station (rho = P / R*T where R is 287.15, P is pressure in Pascals and T is absolute temperature). Cd is provided by Toyota. We can measure Velocity (V) in m/s. What we don't have is A - cross sectional area. Well, now we do.
As long as the grill shutter is closed... Roof line to lower edge of front thing I can't remember what to call plus side mirrors and tires frontal area? Need an anemometer on a stick off the front unicorn style for the SAE rolldown test,
