The Suzuka 1-2 for Lewis and Valtteri - the fourth of the season and second in succession - has left Lewis within sight of that fifth World Drivers' Championship - a feat accomplished by only two men previously, Michael Schumacher and Juan Manuel Fangio.
Heading for Austin, a circuit at which he always excels, Lewis has a 67-point advantage over Sebastian Vettel and another 1-2 result would give him that fifth title. In the Constructors' Championship, the team leads Ferrari by 78 points but the title cannot be clinched in the USA.
"We will not talk about them until we have the trophies in our hands!" Toto said on Sunday night in Japan. And, interestingly, looking ahead, he thinks that future challenges could come from unexpected sources.
We have already pointed out strong Red Bull performances in the last two races. In Japan, the latest specification Honda engine, debuted in Sochi, helped both Toro Rosso cars to reach Q3. That engine will be in the back of the Red Bull in 2019.
"That combination could well be strong," Toto admitted. "We've seen that there's no real pattern anymore, not one team that dominates at one kind of circuit. It has changed and the Honda engine certainly looks very powerful and Red Bull is a good group of racers.
"But, actually, I think the biggest impact will be the completely new 2019 aerodynamic regulations that will change everything up and down. Somebody might find a loophole or an innovation or understand how the car works earlier than others.
"There is a big, big variable in those new regulations next year and we could even have teams right up there which are not on the radar today."