Left potatos and onion in car - still good?

Kaitlyn

When I visited my mom last week she gave me some large potatos (I would assume russet) and whole red onions. They are not ij any sort of packaging. She wrapped them seperately in two grocery bags and tied the bags. They sat in the back seat of my car for about a week. I totally forgot abiut them until just this morning. My car has been cold all week. Are they good to cook and eat? Thanks for any responses