BS, at 70 the ram effect could not even be noticed on a normal vacuume gauge.

It would take 220 mph winds to create a pressure of 1 PSI and the pressure rises exponentially with the velocity (v^2). That means that at 1/3 of that speed there would be only 1/9 the pressure, so the real efect at 70 would at best be a tenth of a PSI. That kind of pressure difference is unnoticeable on any vacuume gauge.