The rear-wheel-drive C15 model gets a combined 19 mpg (16 mpg city, 23 mpg highway), and the four-wheel-drive K15 model comes in at 18 mpg combined (16 mpg city, 22 mpg combined). Those ratings are achieved by the redesigned 5.3-liter V-8 engine paired with a six-speed automatic.
The map on the right shows that lightning is not distributed evenly around the planet. About 70% of lightning occurs on land in the Tropics, where the majority of thunderstorms occur. The north and south poles and the areas over the oceans have the fewest lightning strikes.
Normally, however, the result is rain, wind, lightning, and thunder. Without lightning, there would be no thunder in thunderstorm.. Thunder is the noise lightning makes as it travels through the air. Lightning occurs during all thunderstorms (though not every time it rains). During a storm, it strikes Earth 100 times each second. More than just a dazzling light show, lightning causes billions of dollars in damage each year. Lightning forms when updrafts of air carry water droplets, which have a charge, upward to heights where some freeze into ice and snow particles. They form a cloud.