My irritation level is on a rise...

Okay so my boyfriend told me that he ordered a bunch of crap online. Including LED headlights, LED lights for the inside, rims and a cop radar. He also recently purchased a light bar and some other things. Im fine with it all. He can do what he wants. My problem is the cop radar because I believe that it's time for him to grow up. He shouldn't be driving like a tard in the first place so he shouldn't need a radar for the cops. I told him this and he said that he pays his tickets not me. My problem is that we're starting a family and I may be pregnant. I don't need him driving like a jackass with a baby in the car. And with the amount of shit he buys for his truck, we don't need extra expenses of tickets taking more money from us when tickets can be prevented. Every time he gets one, he gets pissed off and sometimes ends up almost broke after paying bills and a bunch of tickets. So why can't he just fucking drive normal then! (Excuse my language) The part that makes me more mad is that when we got back together a while ago, one of the things I said was that I wasn't going to be with him if he continues to drive like that. He has rear ended someone before, almost hit poles, put his vehicle in the ditch, etc. And I'm sick of it. This includes when im in the vehicle. He drives like a fricken asshole and I'm not putting my kid through this! He promised to stop it because we can't afford having tons of tickets to pay with all the other things needed to be paid for. I'm ready to just give up on the relationship since he's proving he still wants to act like a child.. Advice please. Sorry that it's long.