Freedom is also prevalent. Just like how a motorcycle represents freedom in the Muggle world, in these fanfictions, it gives the characters a sense of liberation from the constraints of Hogwarts or the wizarding society. For example, characters might take off on the motorcycle to have some time alone or to break the rules in a harmless way.
It could symbolize his independence. Just as he is often on his own in the original series, driving the motorcycle shows he can take matters into his own hands and go where he wants without relying on others.
One great piece of Harry Potter motorcycle fanfiction is 'The Flying Motorcycle'. It has an exciting plot where Harry discovers a magically enhanced motorcycle that can do more than just fly. It takes him on an adventure across the wizarding world, facing new challenges and meeting interesting characters along the way.
One idea could be that Harry uses the motorcycle to rescue a group of young witches and wizards who are in danger in a far - off land. He zooms through the skies on his motorcycle, using magic to enhance its speed and capabilities.
Perhaps he uses his motorcycle to explore some mysterious places that are only accessible by bike. He could be riding through enchanted forests or along hidden coastal roads. In the fanfiction, the motorcycle could also be a symbol of his freedom and independence, so he may take long rides just to clear his head and think about his life and relationships.
This anime was called " Speed Otaku ". The male lead was Armstrong, and the female lead was Amy. The story was about Armstrong and Amy, who separated due to a misunderstanding, but both of them had the dream of racing, so they met again and participated in the race together. During the race, the scene of Armstrong driving a motorcycle and Amy being chased by a police car was part of the plot.