Upbeat trends are evident in Nevada's tourism and gaming industries, two reports released Tuesday showed.

The best news to come out Tuesday: The Las Vegas Visitors and Convention Authority reported visitor volume increased 4.3 percent in September -- the first year-over-year monthly increase since May 2008.

The reports show gaming revenues are still down, but they decreased at the lowest rate in 15 months.

Meanwhile, in related economic news, we find that in Las Vegas, as in all other places, necessity is the mother of invention:

Even the men who hand out “nude girls direct to your room” cards stopped their hawking long enough to do some gawking at the “stripper-mobile” as it rolled down the Strip on Monday night.

It's akin to a small U-Haul truck but with Plexiglas surrounding the brightly lit cargo area instead of walls. In the middle is a gleaming stripper pole. Swinging around the pole is a scantily clad young woman. Two of her fellow strippers are in the back of the truck too, awaiting their turns.

Puttering up and down Las Vegas Boulevard on Monday night, it was photographed by nearly everyone it pulled alongside, from CityCenter construction workers to an SUV-load of 20-somethings from Colorado.

It's the ultimate advertising vehicle, said Larry Beard, marking director for Déjà Vu Showgirls. Having run the truck up and down the Strip late at night and into the wee hours for only the past 11 days, he claims it has doubled business at the all-nude Déjà Vu and Little Darlings gentlemen's clubs.

“It's just a great idea that really works,” Beard said.