I said more than 10 because of the "might wreck it" factor.
But if I was SURE it would survive FOEVEREANDEVER.. then I would have voted as such. I'm not going to make the same mistake my dad made when he sold his Z28 for "the kids."
A small child can fit back there, and why not? Might as well give the kids a rush in the back seat of Dad's Camaro while they're young enough to still fit back there. XD