Study: Blind people cannot see, hear hybrid cars

In a new study, hybrid cars have been found to be very dangerous to blind people because they drive with so little sound. First, blind people can't even SEE the cars, and now they can't hear them either? This is certainly a dangerous situation. They should probably install sirens on all hybrids to make sure that everyone can hear them coming. Or pass a law where the driver of the hybrid has to honk really loud before hitting any blind pedestrian. Thaaanks!