I reserved an economy/compact car from Avis, but when I arrived at SFO yesterday, this was waiting for me:

I don't know what it is. A Chevy of some sort. But it's even bigger than it looks here - those are large wheels and large wing mirrors, so you don't get the sense of scale from the photo. Parking it is a bit of a pain, and as I cruise down El Camino Real it proudly tells me that I'm averaging 18.1 MPG. OK, so that would be nearly 23 miles per British gallon, but still....

Not quite what one had in mind.