"The sun and you and me
And all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm at 40 000 miles an hour
Of the galaxy we call the Milky Way
...
We're thirty thousand light years
From the galactic central point;
We go around every two hundred million years"
The speed of the Sun around the Galactic center is about 260 kilometers/sec
give or take. This works out to 1.4 million miles per day, but that is
600,000 miles per hour, not 40,000! The rest of the quote seems roughly
correct, although the current best distance estimate is now about 8,000
parsecs or 26,000 light years. This means that to cover the circumference of
the circle 8,000 parsecs in radius, the total distance is about 9.6x10^17
miles, and this takes about 285 million years.