I don't know how I ever lived without one to back-up and see what's behind me !! It took a bit to get used to mine on my last 2 Toyota trucks and trust the lines. The cameras always show I have much more room to back-up than what my mirrors do. My mirrors always had me getting out to check the clearance from the parked car or object behind me and I had a mile but seemed so close. These cameras don't lie. When I have to back-up the dinosaur Honda Accord in our driveway, I hate it once a week yet I grew up driving something like that all these years.