Top Alcohol was devised in the 1970s as a replacement for the Top Gas class, which was similar but burned gasoline. Initially, alcohol dragsters competed against Funny Cars in a category known as Pro Comp, before a separate class of Top Alcohol Funny Car was created in the 1980s. It was within IHRA's version of this class use of ethanol fuel was pioneered with great success by Mark Thomas, an Ohio farmer who became a five-time champion within that organization. Despite this, ethanol has failed to capture the imagination of racers; the majority opt for more traditional methanol. Today both the Top Alcohol Dragster and Top Alcohol Funny Car compete in NHRA drag racing. They are classed not as professional but as sportsman. Top Alcohol classes also compete outside of North America, most notably in Australia and Europe. In Europe they are called Top Methanol Dragsters and Top Methanol Funny Cars.