I walk the dog through a strip mall parking lot every day. There are some U-Haul rental vans that are always there. So pretty clearly, someone is doing daily rentals on a permanent basis. The prices are painted right on the vans: $19.95 / day plus mileage.
Or maybe they just bought the vans from U-Haul and never repainted them? Interesting question. But U-Haul has a box in the strip mall for dropping off your keys, so I suspect they are rentals.
I was thinking of doing a comparison between actually buying or leasing a van vs. paying the daily rental fee. Could there be an economic inefficiency where it's cheaper to rent every day than buy? I'd need to know the year of the van, for one thing.