The Chariot symbolises the energetic, hopeful departure of the hero into the unknown, into adventure, into life. He sets off, all ready to assume a risk, to find the pot of honey at the end of the rainbow, to dig up the treasure, to kill the dragon, to rescue the princess. This is the attitude you need to get out of a gridlocked situation, out of a confining relationship. This is the attitude you need to make a true new beginning, to truly broaden your horizon.
The danger is, of course, to out of high spirits take risks which end fatally - like Phaeton who let the chariot of the Sun get out of control and crashed down to earth.
Adventuresomeness and courage is not the same as improvidence and
overestimating one's capabilities.