AITA for what I did to my siblings?

My siblings and I all have different dads.

My mom especially hates my dad who was abusive to her. In our house my dad is referred as POS and even my siblings have learned to call him POS.

When I turned 16 my dad bought a car for me so now I drive to school and I give my siblings a ride.

The first time I gave them a ride, we were close to home when they said "You are lucky POS got you a car."

it made me really angry so I drove further away from the house and kicked them both out and told them to walk home.

apparently it took them a while to find their way back home and they were scared (they are 17 and 13 so not little kids)

Now they all think I'm an asshole.