Charles Leerhsen's new book "Blood and Smoke: A True Tale of Mystery, Mayhem and the Birth of the Indy 500" details the wild early days of the sport.
IndyCar officials have not yet addressed safety concerns about the motor sport, preferring to focus on mourning Dan Wheldon, as condolences continue to pour in from around the globe.
Dan Wheldon death stalls momentum that struggling IndyCar series needed to rebuild in 2012. Now, focus will shift to what caused Dan Wheldon crash.
While IndyCar already plans to introduce a safer car next year, the death of Dan Wheldon is spurring calls for other safety measures, including some introspection on the part of drivers.
Dan Weldon's death in a fiery 15-car crash on Sunday has left the motor sports world in shock. Could the crash have been avoided?