Worked fine, drove it 170 miles, parked it and then put into reverse, nothing happened. Tried again and while in reverse (stick shift=R), it lurched into drive. Tried again, and nothing, will not even roll while in neutral. Can't move it either direction. Checked the trans fluid, added a little to the full line (it was only slightly low), and nothing. Still won't move, not even a roll.

Can someone give some guidance quickly?