You might be interested to know that your morning coffee was marked up 1,000 percent by the street vendor who just sold it to you. It’s just one of many fascinating tidbits in “Cartography,” a complete road map to New York City street food. Though Grub Street has previously selected its top five favorite carts, this week’s issue goes all out, not only ranking the city’s best twenty carts but also offering a glimpse into the daily experiences of street vendors. If the feature doesn’t sell you on the guts and glory of sidewalk cuisine, well, fine then — Rob and Robin have singled out several more conventional restaurants to look forward to this summer.