Actually Transport for London, which includes bus, bike, foot, boat, and other options for getting around the London area. The TFL Journey Planner is a fantastic resource.
It has been mentioned elsewhere, but I'll repeat the advice: get an Oyster card when you arrive. It's faster and cheaper than other ways to pay.
Taking advantage of that difference is a big part of how solar installers make a financial case for installing photovoltaics. Of course that trick doesn't work as well for those of us who work at home during the day.
Southern California Edison breaks the bill for each kWh into two components, generation and delivery. In the case of a house that is generating during sunlight hours and consuming during dark hours, it seems only fair that delivery charges should reflect the power carried in either direction.
The big cursor is rather distracting though.
The heavier vehicle puts more wear on the road, so it should pay more.
Is anyone working on that?
Of course many of us geeks are intimidated by Lucy Lawless.