When Eisenhower designed the Interstate Highway System, he envisioned a lawless, death-race arena where only the fastest could avoid being killed by mechanical gulls. Observe a thrilling, birdless incarnation of his racing dream with today's Groupon: for $23, you get one general-admission ticket to the NASCAR Dover 200 at Dover International Speedway on Saturday, September 25, at 3:30 p.m. (a $47 value). Dover International Speedway is located about 75 miles from Philadelphia.

Since 1969, Dover International Speedway has hosted high-speed, action-packed races. Referred to only with wide eyes and great reverence as the "Monster Mile," the one-mile concrete oval track boasts innards-squishing 24-degree banks on turns, with 9-degree banking on straightaways. Speeds will top 160 mph at Saturday's NASCAR Dover 200 race, when superstar Danica Patrick is scheduled to make her Dover debut. The arena offers incredible views of the entire track from any location; you'll witness every mind-bending pass and improperly signaled lane change. Dover's 40,000-pound, 46-foot-tall mascot, Miles the Monster, is not one for conversation, but he politely greets all who enter the track, full-size stock car in hand.

The green flag will drop at 3:30 p.m. on race day, but the festivities commence at 8:30 a.m. with a free NASCAR driver autograph session. The qualifying race begins at 10:35 a.m., and two NASCAR Sprint Cup practice sessions will speed by throughout the day. Patrick will discuss her racing strategies, car stats, and favorite cereal brand during a Q&A session at the Monster Monument at 12:45 p.m. Redeem your Groupon online before September 23.