It might work.
If the DCDC power converter accepts
unregulated 12v power, then it would likely be OK. The key there is
unregulated power, though. If it requires regulated power, you'd neeed to find a way to regulate the cars 12v power (which actually fluctuates from as low as 8v to as high as 15v depending on many factors) for the PSU in that miniPC.
Quote: Originally Posted by
2k1Toaster 
well if it is a rental car, then sure. Make sure to get the rental insurance. If you torch the car, you get your money back.
Good thinking Toaster!
Be sure to bring marshmallows to roast in case something goes horribly wrong and the car burns.
