Sir Alex believes the victory in Paul Scholes' testimonial was evidence that his side are still hungry for more success.
The manager paid an emotional tribute to the midfielder, considering him part of the United family, but is realistic enough to look ahead to a season without the pass master.
"It was a typical Scholesy strike," enthused the boss to MUTV "If you see the replay, the goalkeeper had absolutely no chance. It was brilliant.
"It was a lovely night, the atmosphere was great. New York Cosmos played their part - I know it was 6-0 but they played some good football there and I think the fans had a great night."
Ferguson feels his team are in fine fettle ahead of Sunday's Community Shield examination against City at Wembley.
"You can see the appetite for the game is still there for the players," he added. "No matter what they achieved last season or the season before, they wanted to win again. They want to win this league again. If the supporters wanted to know that, they've got evidence tonight."
Paul Pogba's introduction in place of Scholes was proof that there are youngsters coming through to replace the old guard but the evening belonged to the retiring veteran.
"He's always had great values about his life," said the manager. "He's an honest man, a family fan. All the attributes as a player needed to survive long in this game - he's an example is Paul Scholes.
"It's hard because we've had him since he was 13 years of age. Because he's family it's a sad parting when they eventually retire and age catches up with everyone. It's a great thing that Gary, Paul and Ryan stayed into their mid-thirties. The sacrifices they took is exactly what Scholes has done."