I just thought of something more horrible: I wonder if any of the people whose cars went into the water had picked up their babies or toddlers from daycare on their way home, and had them strapped into the back seat?

http://www.time.com/time/nation/article/0,8599,1649458,00.html
Among the missing is Sadiya Sahal, 23, and her 2-year-old daughter, Hanah Mohamed. Sahal, who is five months pregnant, left home at 5:15 p.m. with the toddler in the back seat. She called her family at 5:30 p.m. saying she was stuck in traffic on the bridge, according to Omar Jamal, a spokesman for the family. That was her last phone call.

"Her husband is destroyed. He's in shock," Jamal said.