Before driving my mom to work I had to get gas for the truck.
Were you out of gas? Why did you stop before picking up your mom?
Yes, I forgot to fill it up the previous day.
It's good that you were able to help your parents out by giving them rides, but it is important to plan ahead whenever people need to get places on time.  If you know you'll need to drive somewhere in the near future, you should have a gas tank already filled, so there is no need to rush.
I shouldn't have to plan ahead. We own a truck, I should just use it anytime I want.
Vehicle ownership comes with responsibilities and part of that is making sure the tank is full. Monitor the fuel gauge next time and make a simply stop to fill up the tank. Being prepared for the future will always save you time.