Koenigsegg GemeraWhile the average person might not be able to buy most cars you'll see here, many of them are still technically available to those with a massive budget. However, the Koenigsegg Gemera goes beyond "massive," with a price tag of over $1.5 million, thanks to additions like an extra-powerful V8 that boosts its horsepower all the way to 2,300. This addition is what allows the Gemera to reach its full potential, with an estimated 0-60 time of just around 1.7 seconds. Curiously, without the V8, it was estimated to hit 62 mph in 1.9 seconds – putting the lesser model very close to the Turbo GT and ensuring the V8 version stays at the top of the heap.Beyond its price, the Gemera's limited availability also keeps it out of reach for most interested buyers. The company has only ever planned to produce a total of 300 models, meaning you'll be more than lucky to find even a used one on sale. It's far from the rarest car out there, but it still makes for a vehicle that's about as exclusive as it is quick.Aspark OwlWhile it comes close to the top spot for fastest acceleration, the Aspark Owl easily takes the crown when it comes to its price. At around $3.2 million, it's the most expensive car on this list, easily surpassing some of the priciest vehicles available today. While its production run isn't as limited as the Nevera R, it's still only able to account for 50 models total, making it yet another rare pick among other quick-yet-luxurious rides. This rarity actually manages to extend beyond the model itself once you look at the company behind it.Interestingly, the Owl is Aspark's sole vehicle currently in production, with the only other version being a slightly-higher-performance model under the label of SP600. While that model's capabilities have yet to be measured in full, a prototype for the Owl was able to hit 1.69 seconds for its 0-60 time. The model that's currently available lists 1.72 seconds instead, but that still easily allows it to claim a spot as one of the top three fastest-accelerating cars today.Dodge Challenger SRT DemonYou could consider the Dodge Challenger SRT Demon 170's place on this list to be an enigma. Between its not-so-limited production run of 3,300 models, its relatively welcoming price point of less than $100,000, and the fact that it isn't any sort of EV or hybrid, there's no way it should be able to compete with the million-dollar hypercars. But it still manages to impress, with its 0-60 time beating almost every other rival at just 1.66 seconds. If acceleration is what you value most, then it doesn't make much sense to bring out $3.2 million for a luxury vehicle instead of this shocking speedster.Of course, like a couple of previously mentioned rivals, this car uses a couple of tricks to get moving so quickly. In particular, this quickness is only achieved on a prepped drag strip, with the time climbing up to around 2.1 seconds in less-than-ideal conditions. It's a pretty massive variance and can take a lot of the wind out of your hair if you're all about that 60 mph sprint. Even so, when it comes to cars that are completely gas-powered, you're unlikely to find any that will surpass the Demon 170's times — with or without preparation.