David Staples: Can an Edmonton family survive without a car?

Can an Edmonton family with children get by without owning a car? 
More than two years ago, Sandra Gaherty, 39, a civil engineer, decided to give it a go, even as she has to get to a full-time job 50 city blocks away, shop for her family, take her boys Noah, 9, and Samuel, 5, to school and child care, and move them each week between her own house in Ritchie and her ex-husband’s home in Old Scona. 
Gaherty had been biking to work for years, but wanted to try living without owning