When Gainesville resident Arturo Corso went to the Hall County Tax Commissioner’s Office in March to opt in to the new motor vehicle title tax program, he was told he couldn’t because he purchased his car out of the state. But changes the Georgia General Assembly put into place a few days after the law took effect on March 1 will allow Corso to opt in if he wants to. The “birthday tax” on motor vehicles went away for vehicles bought on or after March 1, 2013, and a one-time fee of 6.5 percent when the car is titled was put in its place.