Sorry for the delayed response.
The cars purchased prior to marriage are at least partially your separate property. Where earning during marriage are used to pay on a separate property debt, the courts have applied a similar method for determining that the marital estate has obtained at least a partial interest in the value of that car.
Any property that can be characterized as part marital, will be subject to NC Equitable Distribution laws up until the final judgment of divorce. Hopefully I answered your questions completely. Good luck.
Deborah M. Throm
Rosen Law Firm
1829 E. Franklin Street, Bldg. 600
Chapel Hill, NC 27514
919.265.0017 direct
919.321.0780 main voice
www.rosen.com
Email: dthrom@rosen.com
4101 Lake Boone Trail
Suite 500
Raleigh, NC 27607
919.256.1544 direct
919.787.6668 main voice
301 McCullough Drive
Suite 510
Charlotte, NC 28262
704.644.2531 ext. 100