Flivver

A flivver was a type of spacecraft, a small shuttle designed only for short-range transport in the 23rd century.

Background
A flivver was kept aboard a starship and used for emergency transport. It could support a handful of humanoids and had an exterior hatch for boarding. Its engines were powered by a type of portable fuel.

History
In 2267, the USS Enterprise (NCC-1701) came upon a disabled flivver. Spock donned a spacesuit and boarded the vessel through its hatch. He rescued Allura, an unconscious female human. The distress was a ruse so that she could get aboard the Enterprise, but Spock uncovered the deception when he attempted to refuel the ship and found it fully fueled.