I'm flying into Heathrow, but I'm going to be staying reasonably close to Stansted Airport. I've been in the UK many times before and driven the roadways as a passenger, but this will be my first time driving. I'm actually taking all the online driving tests I can find so I know the rules, the signs, and how to navigate, and I'm driving around the UK virtually, to get at least a bit of a taste of the good times (kidding). My question is this, should I rent a car at Heathrow and drive, or use public transportation to Stansted and then rent a car there? I'll be coming in off an international flight, and my guess is I wont want my first road adventure in the UK to start with the beast that is London traffic. Thoughts?