Lots of moms buy organic, compost, and recycle before they load their kids up in a gas-guzzling SUV to transport them to soccer, take them on a nature hike, or pick up more energy-saving light bulbs. There's a campaign for families to go green, but much is also to be said for keeping children safe on the open road. The logistics of space — fitting an entire family and their belongings and friends inside a car — aside, lots of moms and dads feel more secure in a large vehicle because the streets and freeways are already swarming with them. And who wants to take a chance with precious cargo? When it comes to motoring around town, which do you consider more: safety or your carbon footprint?