The main benefit of automatic transmissions is that they are simply easier to use. Driving an automatic transmission car is so easy, in fact, that many nations, including the United Kingdom, France, Germany, Austria and Poland, require that new drivers take their certification tests in manual transmission cars in order to get their drivers’ licenses. As convenient as they are to drive, the very simplicity of automatic transmissions puts them at the center of some heated controversy. There are many who contend (primarily in Europe, where 80 percent of all cars are manuals) that automatics make driving too easy, decreasing driver involvement in the driving process and increasing the likelihood of an accident. That assertion has not, to date (2010), been proven by any scientific studies.