The UK insurance firm came to a conclusion after over 18,000 hairdressers in Britain. The company said the MINI One is three and a half times more likely to be driven by someone working as a hairdresser than everyone else. The Audi TT ain’t the most popular car among hairdressers – or at least not in Britain. According to a new study made by UK women's car insurance specialist, that title goes to the one and only, MINI One hatchback.