To further your analogy, what if it is determined the car is indeed traveling downward on a gentle slope. It was traveling 55 mph, but is now going 60 mph. All the passengers in the car produce "scientific" studies that predict the car will keep going faster because of the downward slope.
However, a funny thing happens. Careful observations of the car's speedometer indicate that the speed is not increasing as it was a short time earlier. But, in fact, has paused for some mysterious reason. Preposterous, the passengers, all scream. Our best computers models prove beyond a doubt that when traveling on a downward slope the car must speed up. It's a scientific fact that no one can dispute and we have the "peer reviewed" papers to prove it. Some even go so far as to proclaim the "science is settled". To claim otherwise is to be an anti-science "denialist". They explain, if the car is not increasing it speed it must because the car must have hit a brief level spot or something. That is why the velocity has failed to increase. Unfortunately for the passengers, though, further measurements indicate the slope is actually now steeper than it was previously, but the car is still traveling at the same speed. Even worse, the latest measurements hint that the car may actually be slowing down.
In all their haste to prove their own "scientific" perspective correct and those of the "denialist" wrong, all the passengers failed to observe the driver has lifted her foot off the gas pedal.