Mazda Champion: Sam Henry

Triple-duty Miata racer from Missouri has won four national championships in SCCA RallyCross, including the 2014 PR-class title. Rupert Berrington Image

There is no doubt that the Miata does many things well and makes an excellent racecar and autocross vehicle, whether in spec trim or in an open class. However, it's not the first car many might think of for going quickly on dirt...