It was a resigned-looking Vettel that faced the media after his visit to the stewards.
Vettel is being investigated for speeding under red flag conditions during the opening practice session, which has the potential to carry a three-place penalty on Sunday's grid.
"I saw the red flag and slowed down, had a look around to see if there was a auto potentially stuck in the wall or if there was one around Turn 9 or 10 and then slowed down significantly to comply with the rules".
Following similar incidents for Esteban Ocon in Suzuka two weeks ago and for Daniel Ricciardo in Australia, the stewards, "to be consistent with previous decisions", handed Vettel the grid drop plus two penalty points on his Super License. They found it took too long and yeah.
"I think I saw the red flag, I slowed down, had a look around (to see) where was the vehicle potentially stuck in the wall", said Vettel.More news: IPhone XR is finally available to pre-order
"They (the race stewards) were very specific, saying that I took 27.7 seconds to slow down", said Vettel.
At a time when Fangio was dominant on the racetrack, Hamilton's paternal grandfather Davidson was working for the London underground transport system having newly-arrived from Grenada. "I was aware I slowed down and not much more to say".
"I think there should be common sense with the rules that we have, " Vettel added.
"I'm not sure it's the right thing to do if there's someone right behind you, but it's more important you don't get the penalty".
"I don't know if the 50s was a particularly good time, it wasn't a great time for black people either, so I probably wouldn't have been racing back then", said Hamilton. If there is a vehicle right behind you, it might run into you.More news: CHECK THIS OUT: Singing ice shelf
Hamilton topped the times for Mercedes in the rain-abbreviated second practice at the Circuit of the Americas which only burst into life for the final 40 minutes as the track dried.
It means Vettel will start no higher than fourth this weekend on a weekend Mercedes is expected to have the advantage in terms of raw pace.
Vettel was fifth on the timesheets with a 1:49.489, almost two seconds off the pace, and behind the Red Bulls of Max Verstappen and Daniel Ricciardo.
"You know when you tell me to go steady, I am not going to", Hamilton said over the team radio. "A leopard never changes its spots".More news: National Football League trade rumors: Browns sending Carlos Hyde to Jaguars