I'm not sure if it's a Mazda or Toyota, but it stores some of the energy from the forward momentum into a battery and then uses it to move the car form a standstill point instead of using petrol
I'm asking because I'm trying to recommend a car that has this technology after his Ford Telstar vehicle had died.
Added (1). Update: I think it's also in Toyota Camry's from 2015 to 2018 because I always hear this slight whistle from these Camrys as they decelerate. I assume that is the generator storing the electricity so that it can move the car from a standstill point instead of using petrol.
Read more: https://fordnews.org/what-s-that-technology-called-that-mazda-has-it-stores.html