But replacing old cars with new takes years.

Increasing production capacity takes even longer than replacing old cars.

It'll be days before they clear all, the tracks and replace cars.

Replacing cars annually would bring more uniformity to the system, which is now a hodgepodge of 18 car models.

These replaced older cars starting over the period 1991-95.

They pumped up sales by encouraging rental car companies to replace cars as often as every four months.

Many owners will also not get around to replacing lost cars until they have taken care of more immediate issues like housing.

After the war, a new design was needed to replace armoured cars that had been worn out.

By comparison, the Japanese are replacing cars every four years.

This was a rare move but a necessary one to replace single-deck cars.