I don’t think that’s it. I don’t know when I got it. I just happen to see it one when when I was looking through some of my cf stuff. The vid is called power speed. It has Charlie and a athlete doin drills with and with out weights on the track. Then doing them on a slight hill
It was a self-described realtime presentation that Charlie produced several years ago titled Speed & Strength. At the time I thought it was quite revealing regarding his concept on power speed and supports a good part on that topic (technical demonstration) as discussed in the Vancouver 2004 video. I also found it prerequisitional for the Fundamental Series and Peaking When It Counts videos.