I took it to mean that if he got out of the car, we would be back at home, with his same old life, still searching for Morpheus. He has been 'down that road before', because thats the 'road' he took every day of his life.
The red pill is a tracking program to find the location of the person and the things in the back of the person's head is how people hack they minds into the matrix
what did the red pill actually do
and what are those things in the back of peoples necks?
A Red Pill lets out a blocks their input and output signals in the Matrix, it also allows them to be found in the Real World, when a Red Pill blocks those input/output signals the Matrix is tricked into thinking your body is dead and ejects you from your Pod.
Finished? Was that really necessary? Considering you started this thread with a question as to the Matrix you could be a little more considerate as to others asking questions on a similar vein. Now shut the hell up and stop abusing other members outside of the Blitz.
Just to add to what Eon said, cut that out. Not everyone knows exactly everything about the Matrix movies. All he asked was a simple question, it wasn't an invitation to bag him out.