Hot cars and RVs both roll on wheels, but otherwise the two types of transportation don't really have all that much in common. They do for the next three days, however, because both the World of Wheels and the RV show share the same weekend - this weekend - on this year's calendar. Here's the relevant info on both shows.

World of Wheels

The 47th Annual O'Reilly Auto Parts World of Wheels car show starts its three-day run of chrome, horsepower, rockabilly bands and TV stars in downtown St. Paul's RiverCentre today.

Chip Foose, the award-winning designer of the Discovery Channel's "Overhaulin'" show, will sign autographs (Sun.), as will Jason Earles of "Hannah Montana" (Sat.) and Wolf and Venom of "American Gladiators" (Sun.). But the show's biggest stars are the cars, including Foose's P32 Street Fighter, a tribute to World War II fighter planes.

Super Rod's "Hemi Nation" exhibit, KITT from the new NBC series "Knight Rider," as well as the KITT from the original series, and a full-size version of the animated Mach 5 from "Speed Racer" will also be there. The show will have more than 300 hot rods, race cars, motorcycles and magazine cover cars, including Ol Skool Rods' traditional rod show. And local cars will compete for special awards in the "Minnesota's Finest" and "Minnesota's Top 10" categories.

Single-day tickets are $13 ($5 for ages 6-12; discount tickets available in advance at participating O'Reilly Auto Parts stores). Show times are 3-10 p.m. today, 11 a.m. – 10 p.m. tomorrow and 11 – 7 Sunday. For more information, call 952-925-4848 or visit www.worldofwheels.com.

RV Show

The 42nd Annual Minneapolis/ St. Paul RV, Vacation and Camping Show, showcasing RVs and other products, fills the Minneapolis Convention Center today through Sunday. From modest $5,000 "pop-up" camping trailers to $400,000 motorhomes with "slide-out" rooms, touch-screen controls and flat-screen TVs, the show features millions of dollars worth of RVs, making it the Upper Midwest's largest annual collection of RVs under one roof. The show also has plenty of camping equipment, plus vacation information from campgrounds, parks and other RV destinations. The comedians/cooks of Ultimate Camp Cooking bring their antics to the show, too.

Hours:

Today/Sat.: 10 a.m. - 9 p.m.; Sun.: 10 a.m. - 5 p.m.

Admission:

$10 adults; $4 ages 6-12

More information:

763-383-4400, www.agievents.com