Former F1 World Champion Mario Andretti has warned the sport against 'overdoing' it with multiple races in the United States.
The 1978 champion has insisted the current tally of three races - with Las Vegas joining Austin and Miami on the schedule - is the sweet spot.
F1 has experienced a market boom in the US in recent years, with the viewer increase seeing record attendances at the United States Grand Prix at the Circuit of the Americas - a change in fortunes largely credited to Netflix's Drive to Survive docuseries.
But dismissing any chance of a fourth race being added to capitalise on the growth, Andretti told RacingNews365 exclusively: "I mean you can overdo it to some degree.
"As Formula 1, there is no other country on the planet that has three events, so let's be happy with that and make the most of that.
"Don't try to outdo yourself."
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Las Vegas permanence should lead to rejoice
Las Vegas will return to the calendar for the first time since 1982, though this time the famous hotel-lined Strip will be featured as part of the track layout.
But it is F1's dedication to creating a facility on land away from the Strip has caught Andretti's eye and he added: "I think the most positive part about that is it is an enormous financial commitment there having seized property downtown that will remain permanent for the years to come.
"It looks like the future is solid for that and that is very important because many of these street events come and go.
"But what they have in place in Las Vegas is not just for the weekend - this is solid.
"There is a lot to be rejoiced about as an F1 fan here."