Which one of the following pairs of cities has recently been connected through a 6-lane express way?

1. The question asks which pair of cities had recently (as of 1998) been connected by a 6-lane express way. 2. The Mumbai-Pune Expressway project was initiated in the late 1990s and was a major infrastructure undertaking in India at that time, aiming to provide a high-speed, 6-lane link between these two major cities in Maharashtra. 3. While other expressways existed or were planned (e.g., parts of Ahmedabad-Vadodara), the Mumbai-Pune project was particularly prominent and fits the description of a major 6-lane expressway connection being established around that period. 4. Connections like Dhaka-Chittagong and Islamabad-Lahore are in Bangladesh and Pakistan respectively.