Not to be confused with commonly found Mesa Grande's, the Canis Mesa is the exclusive vehicle of Merryweather Security Consulting - an organization that continually rears its ugly head throughout Grand Theft Auto V's story. But there's a silver lining to their aggressive pursuit of our three protagonists during "The Wrap Up"; however, it should be noted that this may be the only way to acquire the Canis Mesa. So make sure you grab it towards the end of the mission! You can't miss it.
Declasse Tornado (Mariachi Version)
It's not just any ordinary Declasse Tornado - this one comes equipped with Mariachi guitars, a sombrero and a Mexican flag! It can be found during the Strangers and Freaks mission, "The Civil Border Patrol" or can simply be acquired from the Discount Store's parking lot situated along the Zancudo River. Lucky for you, the Mariachi standing right beside the car isn't strapped.
If this tuner doesn't look familiar, then you most likely didn't buy the Collector's Edition. Shame on you! But if you did, stop by your Pillbox Hill Garage and press right on the directional pad. There she'll be.
Just like the aforementioned, the Hotknife is exclusive to the Collector's Edition. I know, I know - don't shoot the messenger!
Calling this a car would be a stretch, so we'll label it as an honorable mention. Nonetheless, it generated quite a bit of excitement during those pre-release leaks of the game - and rightfully so. Just look at its size compared to that of the Rhino tank! It can be found in Davis Quartz, right beside Offroad Moto/ATV Race 2/4.
And while we're on the subject of honorable mentions, we might as well throw the Nagasaki Blazer into the mix as well. Part crotch rocket, part muscle - Combine it to make the ultimate crotch muscle! Wait, that didn't sound right. Once you beat the game, you should get a call from Ron notifying you that its just outside Trevor's trailer in Sandy Shores.
Police Prison Bus
Rumor has it there's a serial killer on the loose in San Andreas. If you've been looking for him, don't do so in this thing. Felons aren't known to have a proclivity towards it. To find this, you'll need to break into the Bolingbroke Penitentiary and make your way to the back of the compound where it, and a whole bunch of angry correctional officers will be waiting.
The Millennium Falcon's got nothing on the Space Docker! This Dune Buggy is equipped with blue neon, green headlights and some out-of-this world honking tones. You'll need to collect all 50 Spaceship Parts, but it's totally worth it! I mean, just look at that thing! Seeing truly is believing.
Under normal circumstances I wouldn't consider any of the purchasable cars from the in-game web browser to be rare (after all, you can purchase them with the press of a button!), but the Z-Type is certainly the exception. Why? Because it costs $10,000,000. That's $7,000,000 more than the second most expensive vehicle - the Rhino Tank, which costs a measly $3,000,000 in comparison. And yes - I painted mine pink. #DealWithIt