Context will depend on the situation.
Keep on hustling with your sketches suggests that writing sketches is an 'outsider' way to be awesome.
The reflection shows the doors on the car never open, much less anyone outside the vehicle.
As a verb, hustle can either mean to swindle someone or to hurry them, or to work hard.
I guess at this point I am so hungry I can't be too picky.
We also call the act of swindling a hustle, because it happens so fast.
Otherwise we won't be able to make it.
We need to find some grub quick.