I feel like an Uber

So my boyfriend, whom doesn't have a car, always asks for a ride. I don't mind, but he does live really far. 25-30mins from me. Oh yeah, i give him rides because we work together. Recently my car had been acting up and won't accelerate. I toldhim i can't give him a ride because i didn't want too get stranded in the middle of the street, but he said it will be fine and i took him home. I'm stressing over my car, but i feel like he doesn't care. I give him rides because i care and love him, but I'm starting to feel more like his Uber rather than his girlfriend. Am i being selfish if i stop giving him rides constantly?