For motorsport fans, watching the race is only part of the fun. Second-screen...

https://sierra-wiki.win/index.php/IndyCar_Strategy_Basics_-_What_Should_I_Pay_Attention_To%3F

For motorsport fans, watching the race is only part of the fun. Second-screen live timing and team radio bring fans closer to the action, revealing the split-second calls and behind-the-scenes chatter