Moving Kansas race to Spring did not help
Sunday's Kansas City IndyCar race saw the grandstands less than 1/2 full, not a good sign since the race was moved from the sweltering summer to April to make it more comfortable for the fans and the drivers/teams. There was a forecast for rain so that probably kept more than a few fans, who may have otherwise come out, home.
The F1 race in Bahrain also saw a sparse crowd, most not wanting to sit in the hot desert sun for two hours.