hi,i feel a connection with this dream,
this dream may very well mirror the experience & feelings you have stated,
perhaps you were taking action without really thinking about it,hence the stopping,getting out and lookng back at the light,feeling confused right!
you thought you had perhaps done something wrong,ie the feelings it might have been a cop car pulling you over,
alas it wasnt ,you had not commited any wrong,but it did make you check your speed,
i think the voice saying" where are you going there is nothing out there" refers to the very thing you have been looking back on,this may be your previous relationship,your past, things behind us in dreams are usually refering to exactly that,
if your father was alive,what advice would he give ?,i say this as you have a bond with him,so
it seems natural that he would appear as a mentor figure to you,albeit a disembodied one,
i fully understand your predicament as i have been in the same situation myself,it is easy to say ,better the devil you know,but you have a right to be happy ,to be loved and taken care of,it is difficult to make a decision between that which is right and that which is easy,
i hope it all works out for you ,
rgds mikey