I have reviewed many questions on stackoverflow where what is done is to iterate a dictionary through a for loop and change the value for a specific key.

Like this:

```
for key, value in inputdict.items():
    inputdict[key] = newvalue

```

Or just using `update`.

I have not found an answer for this specific case and the truth is that I do not know very well how to proceed.

Let's say I have the following dictionary:

```
dict1 = {
  "brand": "Ford",
  "model": "Mustang",
  "year": "1964"
}

```

And let's say I want a new dictionary (copying the previous dictionary but modifying the value of a certain key):

```
dict2 = {
  "brand": "Ford 1964",
  "model": "Mustang",
  "year": "1964"
}

```

Basically I want the same as dict1, but I want to 'merge' the values of the keys `brand` and `model` into the brand key.

`(dict1) Ford -> (dict2) Ford 1964`

How can I do that?