N.J. Stat. Ann. § 54:8A-57

This act shall take effect immediately, but the tax imposed hereby, and the obligation to pay the same as well as the obligation to deduct and withhold shall be suspended and inoperative in the event that any of the moneys in the Transportation Fund shall be applied to a purpose or purposes other than one set forth in this act, from the date when such application is made until the amounts to be refunded to taxpayers as a result thereof have been allowed and paid; and the tax hereby imposed shall cease to be imposed, assessed and collected after the assessment thereof for any taxable year ending December 31, 1990, and for any part of a taxable year beginning during the year 1990 and ending December 31, 1990.