I know what you mean. If no one's around to see you,
let your arms fly out toward the back to run like Sonic does. :p
If you want to feel like you're running really fast,
play Sonic Adventure using the "slow cam", as SEGA would call it (free cam),
use all of the characters a bit (including the characters that are more your size),
and then go out to run and watch as everything speeds by!
In the games, Sonic only looks fast because of the camera.
Using a free cam and comparing him to medium/tall characters
makes him look as slow as he is. He's less than 3 feet tall,
and it takes twice as much effort to run as fast as a human.
(I've checked out his speed, and I think it's in the lower 30s.[in km/h])
Ugh. How many times have I written (and corrected) "SOnic" in this post?