Vantru Compact Car Air Purifier and Ionizer
Plugging directly into your vehicle’s 12-volt power supply, this compact ionizer for your car takes up virtually no space. There’s just the crystal blue top, where the ions are generated, popping out of the cigarette lighter that virtually every vehicle has.
There are quite a few car air ionizers that look similar to this design, but this one specifically lists negative ion generation of 4,800,000 pcs/cm3, which is quite an impressive amount for such a small air purifier.
It also lists ozone concentrations at less than the safe 0.05 ppm and very minimal power consumption of lower than 0.8 watts.
Have a look at the reviews and customer pictures here on Amazon to see if this would be the best car ionizer for you. With the gift box it comes in, it could make an interesting present as well.