What is the difference between Formula 1 cars and Indy cars?

In comparing Formula 1 and Indy cars, there are several distinctions to note. Formula 1 is an international circuit with more technical and complex cars, while IndyCar is predominantly American and uses more standardized vehicles. The Formula 1 cars are typically lighter, faster and more technologically advanced. On the other hand, Indy cars are heavier but have a higher top speed due to less aerodynamic drag. The differences in the cars reflect the unique challenges and styles of each racing series.