We haven't looked all that fast, but fast is often confused with well executed plays and knowing where to go and what to do. Fast is also a function of your coaches putting you in the right place and formation at the right time.
I would rather have a team that was well drilled in their roles that was above average speed than a team full of blazers out trying to figure out their role. It's early in the season and we're somewhere in between.
Most teams are fast these days. Strength and nutrition has come a long way. Even the team tonight had some speed and that was partly to do with who they have to recruit. That's undersized guys who couldn't go to a better school, largely they lack size. They're smaller, quicker, etc.
I'm not concerned.