Freedom 250 Grand Prix: How does IndyCar qualifying work?

WASHINGTON - High-speed racing has taken over the National Mall this weekend. And while the Freedom 250 Grand Prix isn't until Sunday, Saturday's racing will have a big impact on tomorrow's race. Saturday is qualifying day. The 25 cars will determine how they'll line up at the start of the Grand Prix. Here's everything you need to know about IndyCar qualifying. How does qualifying work?…