Like so many women of her generation, Marna Shure, 72, was once faced with an impossible choice: settle down as a stay-at-home mother and raise a family, or go pro on the motocross circuit. This is her Onion Story. Subscribe to The Onion on YouTube: http://bit.ly/xzrBUA Like The Onion on Facebook: http://www.fb.com/theonion Follow The Onion on Twitter: http://www.twitter.com/theonion More Breaking News: http://www.theonion.com/video/