(a) Notwithstanding this part, a person convicted of a violation of § 39-13-211, § 39-13-212, or § 39-13-215 shall be punished one (1) classification higher than is otherwise provided if the violation occurred as provided in subsection (b).
(b) This section applies if:

(1) The violation was committed by discharging a firearm from within a motor vehicle, as defined by § 55-1-103; and
(2) The victim was a minor at the time of the violation.