Here is how the basic technology behind this invention works.  It really is clever:

The concrete works by having a permeable layer on the surface, made up of relatively large pebbles through which water can drain almost instantly. This is followed by an ‘attenuation layer’, which feeds the water into a drainage system that connects with the city’s groundwater reservoirs. So don’t worry, all the water you can see pouring out in the video isn’t being wasted – it’s being fed straight back into the system for irrigation, drinking water, swimming pools, and firefighting purposes.

While permeable concrete has been around for the past 50 years, it’s mostly been used under pavements to help with drainage, so the researchers at Tarmac figured out how to make a surface layer version of it that’s capable of withstanding the weight of heavy traffic.

This really does sound promising.  And if they can prove successful with some more tests, it is likely this will be rolled out in many urban areas.

thanks to sciencealert.com for the great info

thanks to tarmac for the pic