There's less time left for mothering these days--and less time moms have to themselves. A new study found that mothers are spending more of their.... There's less time left for mothering these days--and less time moms have to themselves. A new study found that mothers are spending more of their time as taxi drivers--74 minutes a day in 2001. That's up from 67 minutes in 2005 according to the DC based Surface Transportation Policy Project.