Motorcycle
A motorcycle was a two or three-wheeled land vehicle that was powered by an internal combustion engine. It was used for civilian as well as military purposes on Earth in the 20th century.

In an alternate 1944, a German military BMW R75 motorcycle escorted a prisoner convoy that transported Captain Jonathan Archer in an Ford Model 51 truck, and which further consisted of an escorting Volkswagen Kübelwagen. All vehicles were damaged when American Resistance fighters ambushed the small convoy, and killed their German occupants. ()

In 1986, an SFPD motorcycle patrolman encountered Pavel Chekov and Uhura, who had traveled through time from the 23rd century. He was impassive as both Uhura and the Russian-accented Chekov asked him to direct them to a nuclear vessel dock facility. ()

In 1996, a pair of motorcyclists were seen on Los Angeles beach by time travelers Kathryn Janeway and Chakotay. ()

In the 2150s, Zobral's clan on the Torothan homeworld had a type of sand-faring, three-wheeled motorcycle. ()

Starfleet officer George Kirk, according to his son, owned a PX70 motorcycle. He would put Winona on it, despite it driving her mad. ()

In the 2240s of the alternate reality, hovercruisers – essentially motorcycles that floated above the ground, rather than riding on wheels – were used by police officers, on Earth, to aid in law enforcement. ()

In 2255 of the alternate reality,  owned a wheeled motorcycle, just prior to his enlistment in Starfleet. Kirk's motorcycle's wheels, however, did not have spokes. When he arrived at Riverside Shipyard to board a shuttle to Starfleet Academy, a yard worker complimented Kirk on his vehicle. Kirk then casually tossed the startcard to the worker, telling him that the motorcycle was now his. Later in 2263, Kirk found a PX70 motorcycle aboard the  on Altamid. Kirk and Jaylah then used it to distract Krall and his drones to free his crew. (; )

In 2374, the Hirogen gained control over the  and utilized its holodeck for the creation of their hunting simulations. One of the scenarios they chose was set in the French World War II-era village of Sainte Claire, occupied by Germans. In order to be as historical correct as possible, they also recreated holographic duplicate period vehicles as backdrop for their simulation, including a Zündapp KS750 motorcycle. ()

A motorcycle capable of hovering over the ground could be seen on Gelrak V in 2380, when the USS Cerritos visited that world. ()

In 3189, a motorcycle was shown in a silent film called Sherlock Jr.; which the crew of the USS Discovery was watching in the shuttlebay. In the film, two men were riding on the motorcycle, but when they struck a dip at an intersection the driver of the motorcycle fell off in a comedic fashion. At this point, the motorcycle was out of control, and the man still on was almost hit by a train, and he finally crashed into a house, where he was catapulted into another man, sending him right through the wall. ()

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Ground vehicles
Alternate reality