You are:
Baby, the driver in the movie Baby Driver
I am here, sitting in my car
Some good rock in my ears
The movie opens with the driver sitting in the car listening to music...
I can feel the power
The speed of the vehicle pushing hard on my bum
...before leading to a high-speed car chase.
Sudenly an hard shake makes me realise
I can't now hear anything
Only deep silence
Towards the end of the movie, the driver is ambushed, and a gun shot near his ears to deafen him
And I see it
I see it like never before
At the end, he sees all the people he helped/ saved during the robberies come forward to testify in his favour.