I have a innovative patent which uses the kinetic energy of the deceleration of a vehicle.
It have one or two turbochargers.
It works with a turbocharger connected to a flywheel or electric motor.
The third turbocharger is activated by the standard gas canister and empties into the second tank and pumped back into the first in deceleration.
It can be applied in trains, buses line, buses, trucks of garbage trucks handling aggregates, vans, cars and elevators.
I think it will reduce fuel consumption and emissions by around 10% or more.