Things we learned from Doug Walker's "Speed Zapper" report on Channel 6:
• Some cars zipped by a school at a breathtaking 42 miles per hour!
• Speeding is more likely to be a problem for schools located on busy streets!
• An elementary school principal worries that a student might be hit!
• While Walker was at one school demonstrating his prowess with the radar gun (and, no doubt, picking up tons