Constitutional amendment (first reference); personal property tax; exemption for motor vehicles owned for personal, noncommercial use. Exempts one motor vehicle used for personal, noncommercial purposes from state and local taxes. The amendment specifies that such exemption is only applicable (i) for automobiles, motorcycles, and pickup trucks and (ii) on and after the date the motor vehicle is acquired or the effective date of the amendment, whichever is later, and is not applicable for any period of time prior to the effective date of the amendment.