husband took my baby

EDIT: It is a hour long walk through the city at night. I don't want to put myself in danger if nothing is actually wrong. I say it is down the street because it's about a 5 minute drive. He has our car. 

I think I know the apartment complex his friend lives in but I don't know the apartment. Will the police be able to find out? Also, it says 6 min driving on google maps and 43 min walking. 

Am I supposed to call 911 if I wanted to call the police about this? Would my husband get in trouble? 

UPDATE: It is normal for him to do this. I never thought he would do it with our baby though. I thought he loved her enough to make sure she ate when she needed to. He finally came back 6 hours after he left. My baby just had a mucusy green stool. I'm figuring it's because she's never gone this long without eating. She's going to the doctor on Saturday. I didn't know where his friend lived. I thought I did when I originally wrote the post but then I realized they moved to California and had just came back and weren't in the same apartment. I feel like leaving my husband I'm so upset. He can do these things to me but not to my baby. I couldn't stop crying thinking about how hungry my daughter must of been. He said he thought he was only gone for 3 hours. He's been such a good dad up until this.