Does my boyfriend not give a f***?

Backstory on us, we’ve been together for 3 going on 4 years. We have a beautiful one year old daughter. He’s good and all as being a good dad but it seems like when it comes to his car that’s where all the loves is. He has an 2007 Lexus gs350 and it’s dropped almost slammed to the floor every time we’re all in the car we’re just constantly scraping.. obviously not a family car. My daughter has her appointments she needs to go to (dentist,doctor,etc..) and I’m not about to drop him off at work at 6 in the morning and drive that freaking car! Can’t drive comfortably without it scraping or I can’t go over bumps nothing! And HE DOESNT UNDERSTAND THAT WE NEED A FAMILY CAR. I’ve tried telling him his mom have and his grandma. But he says it is a family car how the f*** is that a family car?? What can I do to convince him? Or am I being dramatic?