Quest:The Power of the Penny
From Citymania.org wiki
Level 9: The Power of the Penny
- Reach an account balance of 1 billion gbp
Easiest way is to use tropic and fund minimum of 2 2way corner-to-corner lumber-lines.
Also possible in temperate with goods/coal lines or in ECS with coal.
See The Godfather quest for more details
Example Save The Power of the Penny