EVERYONE knows that Jakarta needs a mass rapid transportation (MRT) system to solve the traffic problems. Eight million people live in the capital, and every day another 2 million come into the city to work. In Jakarta, where 80 percent of economic activity takes place, 4.5 million vehicles crowd the streets, more than 1 million of them private cars, and on top of this there are 3 million motorcycles. Most of the new cars sold each yeararound 300