Walking around the city, I regularly find answers to questions I forgot to ask. Like how in these stupefyingly hot August days do Broadway's beautifully planted medians survive? I might have imagined a scenario of thousands of little green thumb gremlins with silver watering cans swarming the avenue in the middle of the night. But when I saw this powerful red watering truck with a shotgun landscaper spraying up the avenue, I realized it was a way more efficient and high-tech solution. Everyone knows New York has fire trucks. Nice to know there's water trucks, too.