IndyCar could scrap its push-to-pass system because the new-for-2018 universal aerokit should allow cars to follow more closely, although it is unlikely to be dropped for next year.
The push-to-pass overtaking aid was added by IndyCar in 2012 for Toronto's street race and utilised a turbocharger boost to allow cars to overtake more easily with an additional 60bhp.
The system was changed last year as drivers were given a time allowance in which they could use push-to-pass.
But IndyCar president of competition Jay Frye says he will now work with drivers regarding ending push-to-pass in the championship.
"That [2017 rules tweak] seemed to be well received by the drivers and so for 2018 we're going to follow up with them, and see if they still perceive it as being the best approach," Frye told Autosport.
"We didn't hear a lot of negativity about it so my assumption was that it worked like they wanted it to.
"But from what I've read of the new kit in our tests and in manufacturer tests, the drivers say the car feels like it has more horsepower because of the drag reduction.
"It feels different already. So do we need push-to-pass going forward?"
Frye has ruled out removing the system for 2018, but said it may be dropped in the near future if it was no longer necessary for aiding overtakes.
"Certainly we have it in 2018, in which configuration is still to be determined, but I don't anticipate a change," he said.
"But in '19 and '20, it may not be needed.
"Up to now it has enhanced the show and the entertainment, it's been something for the broadcasters to talk about, and some fans are interested in it.
"But if we get to the point where we have more horsepower overall and we have these cars that are much quicker in a straight line because of reduced drag, is push-to-pass still necessary?
"Or is it something we should still use because of the nuances it creates over the course of an event?
"I don't know. But it's nice to have options."