Reddit reviews Dometic CDF-11 Smallest Portable Freezer/Refrigerator

No. There aren't any USB fridges. You might find a toy USB cooler, but it would be useless.

There are 12v refrigerators that will run off the 12v plug in the rear of the X.

http://www.amazon.com/Dometic-CDF-11-Smallest-Portable-Refrigerator/dp/B005X97OHA/

Don't waste your money on anything called a cooler. Their cooling is minimal and virtually useless in warm weather. If the description says refrigerator and it costs under $300, they lie. It's just a cooler

I've been living in my jeep Cherokee for about 2 months and have this . I have it in the passenger seat floor. Its an actual freezer/fridge, that's nicely low power and battery saver mode. Great for ice cream across Nevada. :-D

If I ever have a passenger its really light and easy to pop in the back and they have a seat.

Probably your best bet:

https://www.amazon.com/gp/product/B005X97OHA/

Is that like a normal fridge with Freon and a compressor, or is it the gas absorption style like what you'd find in an RV? Just curious since Dometic makes portable gas absorption refrigerators/freezers that look similar to what you've got. https://www.amazon.com/Dometic-CF-080AC110-Portable-Refrigerator-Capacity/dp/B005X97OHA?th=1 Not sure what the 11 liter one draws, but the largest one draws 7 amps at 12VDC

Something like this should work for a sedan: https://www.amazon.com/Dometic-CDF-11-Smallest-Portable-Refrigerator/dp/B005X97OHA