Updated

Searchers in Idaho are trying to determine if the green car seen in a gas station surveillance video belongs to the 21-year-old missing University of Montana student who vanished during a two-day drive last Tuesday.

Lucius Robbi, who told co-workers that he planned to take a drive from Horseshoe Bend, Idaho, to Missoula, Mont., was behind the wheel of a green 1997 Subaru Legacy. He was traveling with two kayaks on top of the car.

Authorities worked to narrow their search, and considered a video from a Chevron gas station a breakthrough. A screen grab showed a similar car and one orange kayak.

But a friend working in the search told Fox News' "Fox and Friends" that there are concerns that the car in the photo was not a match. To be sure, the car and kayak matched the color description, but the car seen in the video appeared to be travelling with one kayak. Robbi was carrying two.

His last contact with his family was at about 2 p.m. last Tuesday and he was supposed to attend a university orientation, but never arrived.

Robbi had been working at a local rafting company, Cascade Raft and Kayak, in the town of Horseshoe Bend.

Kenneth Long, his supervisor at the rafting store, said a group of co-workers drove the route in a search for Robbi and will conduct another search. Long told The Idaho Statesman that Robbi considered camping along the route.