Talk:Hecarim/@comment-80.15.143.26-20120602075203/@comment-4499980-20120602081838

It does. Anything in the game that gives him bonus movement speed gives him bonus Ad through his passive.

Just remember that this also works the other way. Slows will reduce the bonus AD he's gained from the passive until the bonus is down to 0 (it can't bring the passive's bonus below 0 for obvious reasons. Just to be on the safe side, I'll point out that any bonus AD you have from any source other than your passive won't be affected by slows.