That's pretty cool. I've been using "su" [1] myself which is different, I think. From the website:
"it will attempt to restart cmd.exe with administrator privileges, in the current directory, much like if you had started cmd.exe with rightclick "Run as Administrator"
haven't used that "su", but elevate will use the built in mechanism for privilege elevation, if you make UAC prompts silent it will simply work without bothering you.