Haas driver Romain Grosjean concedes he may have to wait until 2017 to make his NASCAR debut.
Grosjean has expressed his desire to race in the Sprint Cup series, with Haas boss Gene Haas also a co-owner of a NASCAR team.
The Stewart-Haas Racing outfit have been keen to give Grosjean the opportunity to race in the series this year following his impressive start to the season.
However, due to a tight schedule around the Formula One calendar, it appears the Frenchman may have to wait until 2017.
"I'm going to two races - Kansas [October 16] and Homestead [November 20] - as a spectator," Grosjean said ahead of the Canadian Grand Prix in Montreal.
"In terms of racing the only choice we have now is Watkins Glen in the August break, but it's a bit tricky during that.
"If it's not this year then I will practice over the winter, and next year we will definitely put it on the calendar.
"I want to do it, but it doesn't fit very well with the schedule, so it's either Watkins Glen or next year.
"But I want to get in some days of testing. It's pointless being there to be last."
He added: "If the team really wants then we will do it.
"But it's more likely [it will be] in the future."