It is a misconception that Arizona has a three-day grace period, also known as a cooling-off period, for motor vehicle sales, during which a purchaser can decide not to buy the vehicle and the sales contract is made void. This is incorrect. There is NO cooling-off period for motor vehicle purchases in Arizona.
(ɪksˈtʃeɪndʒ ˈprəʊɡræm ) noun. an arrangement in which people from different countries visit each other's country, perhaps to strengthen links between them or to improve foreign language skills. a student exchange programme. The American was teaching in England as part of an exchange programme.