Beverly Hillbillies' truck trivia question: Winners and Answers

It was made by George Barris,
. . . .answers first:
(this picture is of a toy 1922 Oldsmobile touring sedan)

• George Barris is a famous Los Angeles customizer (link);
• original car was a 1922 Oldsmobile sedan** (link);
• and the Beverly Hillbillies Hotrod was a 21 Oldsmobile Roadster with a '69 Olds 442 engine (link)

Winners:

• Rachel (blog), 1st place because first in time (she said "1921 Oldsmobile??? )
• Billy, son-in-law (he said "1921 Oldsmobile, but there were two of these, one for the movie)
• Cheyenne (blog), (she said "a 1921 Oldsmobile)

That's about it. I started with the Tim Spell, Houston Chronicle article below and didn't do as much research as several readers. So you might be more right than I am, but "It's my blog and this is the way it will be," you see, I don't like to argue.

Should my next one might be more fun or more controversial?

Thanks too, to the rest of you who commented, and maybe some who already knew but didn't want to tell because you researched the answer.
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**
"For instance, Barris' quest to locate a jalopy for the The Beverly Hillbillies, jibing with Ozark family's roots, was answered as Barris was cruising along Interstate 10, passing a feed store in Fontana, Calif.
"All of a sudden I saw an old car," he said. "I whipped off the freeway and went back into the feed store and there was an old 1922 Oldsmobile — it was a sedan, the guy had cut the back off of it and he was using it to haul hay." He photographed it and took the images to the show's producer and writer Paul Henning.
Henning was delighted with the relic, but added a small modification to Barris' plans — "We have to put a rocking chair in the back for old granny to sit on." "
[From the Houston Chronicle, Sunday, May 14, 2006--Link ]