Ummm.... duh? Mrs. Imus was also at the ranch house with the doc and offered him a ride... there was no 'waiting for the I-woman'.
My point still stands, though. There should be vehicles ready and waiting for the medical staff. Why does the wife have to get involved. It's not like he can't afford it. Shoot, he can just auction a couple off and have the listeners pay for it - like he did everything else.