Well no, it won't go to the floor. If I rest my foot on the petal I will gradually be doing over 100 MPH. It's only too light between 0-60 which I believe is the way the 4.6 is set up. I wouldn't mind more throttle response between 80-100 for overtaking.

I drove two other 4.6's before buying and I believe it was the same.

It could also be attributed to my huge feet and heavy shoes