On our way across south-central Arizona on I-10 boredom was definitely an issue so we decided to do some research. In one ten-minute period at 10:30 a.m. we noted the following: nineteen class-A (very big) motor homes, eleven 5th-wheelers, seven class C motor homes (smaller, cab-over types), two caravans (trailers).

At 11 a.m. on the same highway we counted 44 large trailer trucks, 47 autos, and 5 RVs over a ten-minute period.

We have no idea what any of this means.