N.J. Stat. § 27:18-4: Maintenance; transfer of control to park commission

After the completion of the speedway, the board of chosen freeholders shall maintain it, but may in its discretion, by resolution, transfer the title to the speedway to the park commission of the county in which it is located, in which case the park commission shall maintain the speedway and prescribe the manner in which it shall be used and maintained, or may use it for a parkway.