Based on a seinen manga by Kusunoki Michiharu serialised in Young Magazine. The story gets its roots from the actual street racing that occurs on Tokyo's Shuto Expressway, one stretch of which is known as the "Wangan", literally meaning "bay side" (although it is generally used to refer to the freeway), the longest, straightest road in the entire country. Of course, there's also lots of traffic to contend with, including a fair number of heavy trucks. Because of this, the action is inherently hazardous, and wrecks are common. Blown engines are also a frequent hazard, especially with the extreme-high power engines. One day, Akio Asakura, a third year high school student, is driving his Fairlady Z (Z31) and is challenged by Tatsuya Shima, a doctor, in his black Porsche 964 Turbo (nicknamed the "BlackBird"). With a friend in the passenger seat and two girls in the back, Akio pitifully tries to win, but is defeated. Determined to become faster, he goes to the junkyard to buy parts for his car, when he sees a pristine, unscratched midnight blue Fairlady Z (S30) in the junkyard. Intrigued as to why such a machine is about to be junked, he buys it. He soon finds that the car is unnaturally fast due to a tuned L28 engine, bored and stroked to 3.1 liters combined with twin turbos, which produces 620bhp. He also finds that all of the car's previous owners had unfortunate accidents in it, starting with the first owner's death. The manga follows Akio's various encounters, though the central plot revolves around his constant battle with the BlackBird for superiority. (Source: AniDB)

Mechadock is a powerful race car obtained from a simple economy car, which is able to race on any ground.

The second movie in a trilogy.

No dream is too big for Appare Sorrano, a socially-awkward inventor living in a small rural town in Japan in the late 19th century. Fascinated since childhood by the creation of steamships that can connect people across great distances, he's learned to make machines of all kinds from various scientific texts. His goal is to sail across the sea, beyond the sky, and ultimately, to the other side of the moon. Unfortunately, through a string of events, Appare finds himself stranded in the middle of the sea on his mini steamship. Floating alongside him is a skilled but cowardly samurai, Kosame Ishikki, who was tasked to keep his eccentric behavior in check. Just when all hope seems lost, a large steamship saves them and takes them to Los Angeles. With no money or plans, they decide to participate in the "Trans-America Wild Race," which gives Appare the chance to build his own automobile, and Kosame the opportunity to use the cash prize to return home. However, against rival racers and unknown challenges residing in the wilderness, just how far will this adventure take Appare and Kosame? [Written by MAL Rewrite]