The document summarizes key differences between Bangalore's proposed metro system and improving the existing bus system. The metro will have limited initial coverage of just 33 km compared to London's 400 km system. It will be very expensive, costing over 100,000 crore rupees to achieve similar coverage as London. In contrast, improving bus services could provide city-wide coverage much more quickly for only 2,500 crore rupees. The metro also risks significant environmental damage by requiring elevated tracks, unlike other metro systems that are mostly underground.