While some innovative designs and concepts have explored temperature regulation in beverage containers, including soda bottles, the existence of self-cooling soda bottles as widely available consumer products is not common.

Here are a few examples of concepts and approaches related to temperature control in beverage containers:

Cooling Sleeves: Some brands offer insulated sleeves or koozies that can be placed around bottles or cans to help maintain their temperature, but these are not self-cooling in the sense of actively lowering the temperature.

Thermal Insulation: Certain container designs may incorporate insulation materials to slow down the transfer of heat, keeping beverages cooler for a longer time, but they do not actively cool the contents.

Phase-Changing Materials: Some concepts have explored the use of phase-changing materials that absorb and release heat as they transition between solid and liquid states. This technology could potentially be integrated into beverage containers for temperature regulation.

Peltier Effect: This thermoelectric cooling method involves the use of semiconductor junctions to create a temperature difference, potentially enabling localized cooling effects. However, its practicality and efficiency in a portable consumer product like a soda bottle remain challenging.

While research and development continue in the area of temperature control for beverages, self-cooling soda bottles as a widespread commercial product are not yet a reality. If you're interested in keeping your soda cool, using insulated containers, refrigeration, or adding ice are still the most practical methods.