Yes, it's mainly designed for bigger vehicles! Thanks God you didn't got hit!
That's the point! We have many uncovered manholes and tire killing things on Pakistani roads :o
As I mentioned in main thread, you can find normal quality in 150 Rs per pair and good pair of mirrors may cost you around 400rs. You didn't but I did see a central rearview mirror with watch and thermometer on other side in a Datsun 120-Y taxi few years ago 
Please see the THIRD (3rd) picture in the main thread above, you'll see how it works 
Right side? they say it's more useful on passenger side though.