Ferguson claimed the scale of the parade even eclipsed that which followed the historic 1999 treble.
Many players felt the turn-out was largely due to Ferguson's decision to end his 26-year reign.
But the Scot is sticking to his guns, with David Moyes already installed as his replacement.
"You always think about it (whether you are doing the right thing). But I think it is the right time. I really do," Ferguson said.
"We have a young squad, with a lot of good young players, who are going to get better.
"The big test is to win it three times in a row.
"I hope the boys can do it."