We successfully bid for a midsize car on Priceline for DTW, 9/1/10-9/5/10, and received confirmation for Alamo.
When we arrived at DTW Alamo, they would not give us a mid-size car; a Pontiac GE6-four door is what we had received confirmation for. They said since Alamo was bought out by Enterprise two years ago, its mid size cars are actually "compact" cars.
They wanted to give us a compact Ford Focus, which was totally unacceptable. They did ultimately give us a mid-size+ and said they could not do it again and said Priceline needs to update its information re the "mid-size" cars one will get from Alamo.