17 MPH is 4.81 seconds in a 40 yard dash. How many OL in the NFL do you think can actually do that? According to the NFL combine records (
http://www.nfl.com/combine/top-perfo...SH&position=OL), since 2006, only three OL have matched or better a 4.81 40 yard dash time. And, of course, that was without pads.
For more comparison, Carson Wentz's time was 4.77. The fast combine time ever, 4.22, only comes out to about 19.4 MPH.
In regards to comparing to regular people, go reread my original post that you responded to.
For a football expert, your brain is SLOW.