The United States does actually have a nicely set up ladder leading to Indy Car racing. The problem is that it is not very populated. I have stated for decades that the problem with American racing is that the "crucible isn't hot enough", meaning that the depth and caliber of the series isn't such that it is going to generate a significant number of world class (American) drivers. Lets us look where we are at in 2019: First rung: F2000 National Championship. It has 8 races in a season, with 7 of them being double-race weekends. So 15 races. The first two races of 2019 each had 20 drivers. Of the 21 participating drivers, 10 are American. Second rung: Indy Pro 2000 (formally Pro Mazda Championship): It has 9 race meets with 16 races. The first race of the season had 14 drivers while the second race of 2019 has 13. Of the 14 participating drivers, 7 are American. Third rung: Indy Lights. This is supposedly the feeder series into Indy Car racing. It has four teams and 10 drivers. There are 10 race meets with 18 races. They have had four races this season for their 10 drivers. Of the 10 drivers, 4 are Americans. The series is being lead right now by one them (with 2 wins), Oliver Askew, who is 22 and has been carting since he was 8. He has been working his way up the ladder, competing in the Formula Ford Festival in 2016, winning the U.S. F2000 in 2017 (7 wins) and placing third in Pro Mazda in 2018 (1 win). And then we get to Indy Car: It is a 17-race season with 24 drivers at the first two races. Of the 26 participating drivers,11 are American. Right now, 6 of the top 8 drivers in the points are American, with the series led by Josef Newgarden (7 seasons in Indy Car - 11 wins) followed by Colton Herta (new guy - 1 win). Anyhow, for those of us waiting for another race-winning American to show up in F1......it may happen, but as I have always complained the "crucible isn't hot enough." Quite simply, American road racing never recovered from the gas crisis of the 1970s and the subsequent shift away from the "car culture."