I'm so freaking worried right now. my fiance was stressing bad cause his car he just got back isn't…

I'm so freaking worried right now. my fiance was stressing bad cause his car he just got back isn't totally fixed and his mom was trying to fix it when he had to leave for work and I got my dad to bring me his car so he could go to work and he got pissed off at me about it. I'm not mad about that his mom was stressing him out. But when I was taking my dad back to work he left. in his car. that could break down at any second. instead of waiting for me to get back with my dad's car. He was stressed out bad and stormed off. I hope he is okay. I hope he calls me if he breaks down. I'm halfway tempted to head to his work to see if he is on the side of the road somewhere. I'm so scared I'm in tears. He was emotional. he could wreck.