[stripes1776]

The reality, as Einstein sees it, is that in the reference frame of the unevenly accelerated car the timespace is unevenly warped. Whether the warp is inertial or gravitational is a matter of differently labeling the same reality.

Yes, fictitious gravitational forces emerging mysteriously out of nowhere can be used to point to real effects. That doesn't mean the explanation is convincing.

Being a good scientist he will stop at that; he will not prefer one hypothesis over the other, because, having been brought up inside his lab, he lacks the knowledge that would tell him that accelerating cars are very common and planets chasing cars are not common at all.

This is why it is good for physicists to get out of the lab once in a while. Walk down to the local pub and have a beer.

[annalex]

it is good for physicists to get out of the lab once in a while. Walk down to the local pub and have a beer.

Mortification of flesh is necessary if one wants to unlock the mysteries of the creation; but why restrict it to beer? A hairshirt, fasting, or flagellation can focus the mind as well, and unlike beer, these things do not make one sleepy.