Sport Bikes - Automania! Author:Katharine Bailey Ages 7 to 14 years. The first motorcycles were little more than bicycles with basic engines strapped onto them. Over time, these bone shakers have evolved into powerful, agile vehicles that riders take off-road and race in what have become some of the hottest new extreme sports of the last decade Young readers will be mesmerised by Superbikes, ... more »Speedway, and Grand Prix racing; motocross and trail bikes; and rallying.« less