Most likely the Muses.
Jupiter is the Roman equivalent to Zeus. Jupiter is the Roman God of Gods.
the gods (LOL)
Greek Mythology.
Jove, or Jupiter was the king of the gods in Roman mythology. He was the lord of the sky. Zeus was his Greek equivalent.
Echo is the Roman name. It was transliterated (when you replace the Greek sounds with their equivalent Latin letters) from the Greek Ἠχώ. It's similar to how the Greek and Latin words for Apollo are the same, just that the Greek is spelled using the Greek alphabet. Sometimes the Romans didn't have original equivalents, so they just used the Greek name.
the Olympians
greek gods
There are many Greek Gods and Goddesses.
The Greek equivalent of Jupiter, King of the Gods, is Zeus.
They have named cars after practically everything, so Greek gods is not surprising.
Mercury was the real name of the god Mercury and it was never changed. He was a Roman god. At one point of their history the Romans associated their gods to the Greek gods. The Greek equivalent of Mercury was Hermes.
The Greek Gods were supposed to have lived on the top of mount Olympus.