Back to your original question Smogg...
The Song is 'I'm in Love With my Car' and was written by Roger Taylor (Queen's drummer).
It is off the album A Night At The Opera released in 1975.
At one time I was very into the early Queen stuff (their first 5 albums), but I lost interest after News of the World even though that album had some decent stuff on it.
The earlier works are imho their best with some very unique and pretty intense tunes.
you know, i am simply amazed that it's queen. i'm familiar with night at the opera, but not that song! i need gingko.
oh, and i saw the commercial again. it's for jaguar [or, "jah-gyu-are," as the announcer says]. and i just can't believe it's mercury.
now i have to go get night at the opera and see if you're wrong.
