(August 5, 2011) CARSON, Calif., — As that midsummer road trip approaches, it is time for the annual summer engine tune-up ... or is it? Typically, car owners visit their local repair shop for a tune-up before hitting the road, but the traditional definition of a tune-up has changed. It may have made sense for our parents and grandparents to tune-up every 15,000 or 30,000 miles, but, today, the demand for fewer emissions and technological advancements have reduced the need. In fact, the 'tune-up' is becoming an outdated term with no real definition, according to AutoMD.com.