Stuff like this drives me nuts.

A few blind people may, or may not be affected by a few million "silent" vehicles. So lets affect millions of cars and drivers, at a collectively huge expense.

This is like in a town not far from me, a town of 200 people complain that the Union Pacifc railroad makes too much noise, or blocks their access to the highway for 'up to 10 minutes at a time' and wants Union Pacific to spend millions on sound barriers and a track "overpass" for 200 residents.

Union Pacific ( rightly so ) says "We were here since 1870. You chose to put your house close to our tracks. We were here first."

I know, not the same, but it is in the sense that a small group thinks they are more important than the masses. That railroad serves millions of people a year, and 200 people are upset.