This is an idea to store the exhaust gases of automobiles on board instead of letting it out into the atmosphere freely which would otherwise cause pollution and global warming. When the tank is full, it is vented into a toxic gas treatment facility where it needs to be processed and disposed off safely.
The exhaust gases will be filled into a tank using a compressor. The compressor is run either by the engine power or from an electric motor deriving power from the automobile's electric system. The tank needs to be cooled and filled with a material such as activated carbon so that the gases can adsorb into its microscopic crevices taking less space and pressure.
This also enables use of non environment friendly fuels which otherwise are cheap or burn very efficiently but produce obnoxious gases. Also, the catalytic converter is no longer required.
This is a short-term solution before all the cars/automobiles are converted to electric or the world crude oil reserves run ou