SANTA ANA (CBSLA.com) — Authorities Thursday were seeking the help of witnesses who may have seen a woman or her vehicle that caught on fire along a toll road in Orange County.

The A 50-year-old woman and her burning car were found around 8:40 p.m. Wednesday on the northbound 73 Toll Road, between Glenwood and El Toro Road, the OC Fire Authority said.

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The unidentified woman was transported to Western Medical Center in Santa Ana in serious condition with second and third degree burns.

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Doctors said she suffered burns to 27 percent of her body.

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Anyone who may have seen anything was urged to call authorities at (714)573-6709.