I can't keep living like this...?

I have been married for 15 months to a man I've known since highschool... over the past few weeks he has grown very distant. He seems to always have something to do away from home and when he is here it feels like he's not. I let him take my car to work last week and the next day it wouldn't crank.... He still hasn't fixed it, every excuse in the book. His idea of spending time with me is having . Then he falls asleep, gets up and goes to work. He's not interested in my work anymore. (photographer). He makes very cruel remarks. I mentioned the other day that since I've been working out I've lost 8 more lbs. His reply was "Don't try to fish a compliment out of me". He has just become hateful and sarcastic and distant. I cook, clean and make sure he has clean clothes. I have 3 children to take care of also. I try talking to him about this and it just leads to an argument because he can't admit there is anything wrong with him. He constantly is on my *** about everything. Whats not done right, what i've done wrong... never compliments me anymore. All negative. He only wants to talk about work. Nothing else. I'm at my wits end with this. I'm stranded at home with no way to go anywhere and have been for almost a week now. He has a truck and can go whenever but for some reason my car just mysteriously "stops working" right after he drove it last and this is not the first time this has happened. Could someone please give me a little insight on this problem?? I am in tears and just don't know what to do.