.............The car represents driving through life, one's own consciousness.....

 

"Getting somewhere , like at home, without KNOWING consciously, how one got there", suggests you need to be more cognizant, of "What drives you in life".....metaphorically speaking.

This is NOT literal, but symbolic representations.

 

Realizing you "shouldn't drive anymore", means you are being told, or warned (via your higher self); you need to become more cognizant and aware of what, why and how you are "driving/I.e. moving your conscousness through life"  means not drive in the SAME manner  one's life anymore.

 

Not knowing, "how I got there" or from here to there, suggests the reflection occurring now, and not being happy about the recent move. ie "how did I do this?""how did I go from being happy to this?"