How about if we jazz it up with the Italian spelling, Papagallo? The Fiat Pappagallo!
Dennis
Popular with circus clowns? Or maybe Shriners?
Merkur was a Ford owned (via Lincoln-Mercury) brand. They took the German Sierra and Scorpio and modified them to meet US safety and emissions standards.
Back in the early 80s National Lampoon had a writer who took an old beater and fake souped it up - gutter pipes along the sides as fake exhaust pipes, a metal paint tray bolted upside down on the hood as a scoop, that kind of stuff. He spray painted it Rustoleum flat black and called it the Thunderchicken. (Because it looked like thunder but ran like a chicken.)
Or intended use…
Land Rover Fieldfucker
Reminds me of the old Freddy Fuckerfaster jokes.
Dennis
I’ve got a Commando, but I always wear boxers.
If names such as Armada, Millenia, and Spectra are acceptable, I want to see vehicles named Herd, Swarm, and Flock. They’d make as much sense.
AMC borrowed the Pacer name from Ford. Ford used the name for one of the Edsel models. Someone at AMC should have looked into how that turned out before picking it. 
When SUV/pickup marketers get stumped for a name, they get a big map of the western half of North America and throw darts at it. So we get names from Yukon to Baja. Give them time, the darts will land in those other places eventually.
I had the same reaction. Obviously those guys had never heard the phrase “the aroma of Tacoma”. Their dart just landed in the wrong place.
The Subaru Ladiesnight
The VW Plumsmuggler
The Porsche Taxdodge
Got curious about which nine California counties have been used. So far I have
Cadillac Eldorado
Chrysler Imperial
Mercury Monterey
GMC Sonoma
Pontiac Ventura
There was also a Chrysler Alpine, although according to Wikipedia, it wasn’t marketed in the US. Don’t know if you count that one or not. What are the others?
Oldsmobile Father (yes, it’s your father’s Oldsmobile).
In keeping with the sleek and swift brand imagery of sea creatures such as Stingray, Marlin and Barracuda, I offer these powerful car names in good faith to the various manufacturers:
Audi Anchovy
Buick Blobfish
Chrysler Clownfish
Dodge Dogfish
Ford Flounder
Hyundai Humuhumunukunukuapua’a
Jaguar Jewfish
Lexus Lungfish
Mitsubishi Monkeyface Prickleback
Nissan Noodlefish
Peugeot Pickled Herring
Saab Smelt
Toyota Toadfish
There are still plenty of horse names to go around even if the pony car era is (kind of) over:
Chevy Percheron
Ford Arabian
Hyundai Mongolian Pony
Chrysler Quarter
Nissan Piebald
Just start naming them after diseases in other languages; that ought to buy a decade or three.
(Hyundai “Beriberi” or Ford “Kuru”? Lamborghini “Seborrhea”?)
I found Ford Sierra. Also, there was a British car called the Sunbeam Alpine that was sold in the USA.