Earlier quoted context omitted.
I drive a Chevy Suburban (6 kids), its a huge car and can be hard to see my surroundings. When I'm backing out of a parking spot, it will vibrate the left or right side of my seat if a car is coming from the appropriate direction. It'll also do the same if it senses you're drifting into another lane or if you are changing lanes purposefully (blinker on) and someone is in my blindspot. It is extremely convenient
My math teacher would say that the wise Indian parks his horses the direction of escape. Why not back into the parking spot and pull out forward? The overreliance on tech is frightening.
Although this assumes you have a massive car for an actual reason.