Starbugs are litte green, bug-shaped spaceships used by the
JMC. They are incredibly durable. To paraphrase
Lister, "
Scientists noticed that whenever an
airplane would crash, they'd search through the wreckage and the only thing that ever survives intact are these cute little baby
dolls. So they built Starbug out of the same
stuff."
The main characters from
Red Dwarf usually only rode around in
StarBug 1, or if that wasn't available,
StarBug 2.