BUY TICKETS for The American Endurance Racing. The (AER) series was born in 2014 out of a desire for an inclusive endurance racing series with simple rules. AER’s goal is to provide a fun, safe environment for experienced drivers to participate in endurance races using almost any production based race car. All AER races will be multi-class races with cars competing against other, in-class cars. Cars will be classed with other cars with similar performance based on qualifying times posted during qualifying sessions.