[Steve Barcak]

There have been aftermarket curved mirrors available for decades. Not sure why his is special, esp if it only applies to the left side.
On 2 of my Pontiacs, I have zero blind spots. do not even need to turn my head to merge onto a fwy believe it or not. Have no less than 8 mirrors for 360 viewing. It takes some time/training to get used to for sure but, extremely effective. No one sneaks up on me without me knowing it. Have done this for close to 20 years now on 4 Pontiacs.
Have done testing in the past having people walk around my car, at different distances, to make sure they al work correctly.
After driving with them though, I am somewhat uncomfortable driving other cars as I find myself always looking around to places I can normally see in my other cars.

It is a very effective way to keep aware of what is around you without having to turn your head.