Trust me - I get it - change is hard. I work with people struggling with technology change every day. I have a couple of comments regarding this:
1) Change is not done to you, it is done for you. The engineers at Microsoft really do believe that Windows 10 will be better than Windows 7, and that once you are past the initial change, you will prefer the new system. Let's use your car analogy. In the Model T, the throttle was not a gas pedal. It was a lever on the steering column. The right-most of the 3 pedals was the brake. Now, can you imagine trying to drive a car with those controls on today's highway at 70 MPH? No way! Changing the controls of the Model T was needed to move forward, and without that change, you would not be able to have the performance and safety you have today.
2) IMHO, the key to adapting to change is to acquire some knowledge about the actual workings of the system. You don't need to be an engineer, but it certainly helps to understand something about what the buttons & levers do. This will allow you to not simply look for the lever you have always pulled, but to understand that whether it is a lever or a button doesn't really matter. What matters is that there is going to be a control to do that function. It might look different, be a different color, or be moved to different menu, but once I know where the control is, I know what it will do.
I'll tell you a story about my Dad (he died about 13 years ago at the age of 86). He was visiting and said he needed to get some cash. So, I took him to the nearest ATM. He walks up, inserts his card and starts pushing buttons. I then hear the familiar "@#$%" and he hits cancel and ejects his card. Once again, he inserts his card, and immediately starts pushing buttons - and the same thing happens again, no cash, just more expletives.
So, I walk up to help him. I tell him to try again so I can watch him. I noticed that as soon as he inserted his card, he started pushing the buttons - he wasn't even reading the screen! So, I stop him and say "OK, one more time, but this time just insert your card and don't do anything else. Let's see what the screen says." So, he does as I asked, and the first thing on the screen was "English or Spanish?" He looks at it and says "What the "@%$#" is that? The one at home doesn't ask if I want it in Spanish!" He then selected "English" and followed all the screens after that, and successfully got his cash.
He was not even reading the screen. He was just assuming that every ATM in the world worked exactly the same and as long as he had memorized the keys to press, he would get his money. That is exactly the wrong way to use technology.
"The Luggage had a straightforward way of dealing with things between it and its intended destination: it ignored them." -Terry Pratchett