Built for Formula One, the 3.41-mile Circuit of the Americas opened in 2012 and has catered primarily to the European-based racing series F1 and MotoGP, hosting the US Grand Prix and the Grand Prix of the Americas respectively every year.
While Epstein also wanted to host IndyCar, the Austin track had been frozen out by a geographic exclusivity clause the American series had in its contract with Texas Motor Speedway just three hours north in Fort Worth.
The restriction frustrated some fans but also gave the Circuit of the Americas time to mature as a track and gain exposure as a global and national destination for drivers and fans, Epstein said.
Relations between the two Texas tracks had been touchy for years, but now that both host IndyCar races about 10 weeks apart, Epstein sees no reason why both can't thrive.
"Their health is as important to the health of racing as ours is," Epstein said. "They didn't really roll out the welcome mat because they didn't know what we would become. Everybody has the right to be protective of their investment. [But] I don't think their success comes at our loss and I would hope they feel the same way."
Texas Motor Speedway president Eddie Gossage said he wants the IndyCar Classic to be a hit.
"I would expect their crowd to top 100,000 people. It's a new thing, a novelty, and for their first visit there, they should draw a huge crowd," Gossage said. "When we first ran IndyCar, we drew well over 100,000 people for the race for many years. That kind of success on Sunday will be good for all racing in Texas."
IndyCar has pushed to boost its new track's profile in the off-season, hosting its pre-season media days and two days of testing in February.
Several drivers were already familiar with the circuit, having turned laps in F1 or in private visits in years past.
Andretti Autosports' Alex Rossi, Arrow Schmidt Peterson's Marcus Ericsson and Carlin's Max Chilton all raced in Austin in F1. Ericsson finished 10th at the US Grand Prix last year.
Ericsson said the F1 experience is of little value in his new series.
"I had all my reference points and did the first round [of practice] and it didn't really work," Ericsson said. "The IndyCar today is very different to drive with grip and power steering. Things that worked in an F1 car don't really work in an IndyCar."
The most tantalising aspect for the former F1 drivers is returning with a chance to win. Rossi had little chance of even making the podium when he raced the US Grand Prix for Marussia in 2015. Rossi finished 12th that year after eight other cars retired and still was more than 1m 15s off the winning pace.
Since joining IndyCar, Rossi is a five-time race winner, including the 2016 Indianapolis 500, and finished second in the championship last season. Rossi finished fifth in the season opener at St Petersburg, Florida, on March 10, a race won by Team Penske's Josef Newgarden.
- AP
