Are you interested in machines that can carry their riders full-speed over dirt, snow, ice, or through water? How about metal giants heavy enough to crush cars and powerful enough to soar through the air? If INSANE SPEED is your thing, then get the facts about your favorite sport vehicles in this exciting series. Every book also includes a page for caregivers and teachers that suggests guiding questions to help aid in reading comprehension. Downloadable Teacher's Guide available.