I feel second to my parents love life

My parents divorced this year and its been rocky. Both my parents got gf’s, which is definitely a new change for me as someone w asd. Ihave no siblings. My mom tries her hardest to make me her priority and will communicate with me and tell me everything, but i still get kicked out frequently so my mom and her gf can have alone time. She is trying her best though and my moms gf is respectful so i dont have too much of a problem. My dad on the other hand, is way worse. He constantly lies to me, is going to probably propose to his gf of a few months, spends 90% of the day and night with her, only talks about her and berates me for not wanting to hang out as a “family”. I just feel like a nuisance to my parents as (my dad especially) cares more about his gf than me. He’s keeps telling me “your an adult your fine”, but then takes my car and uses all our money on hanging out with her. For example, i have a car and my dad doesnt, but he keeps taking my car all day and night without asking so he can be with his gf and help her out with her job. When i tell him i need MY car, he gets annoyed and tries to take the car anyways. Am i only a problem to him? I don’t hate his gf, but she has absolutely no sense of personal space and seems ignorant to the current issues i’m having with my dad. I just feel like im spiraling with everything going on.