my boyfriends mom

So I've been dating this guy since May and his mom has always liked me. I'm 18 and he's 19 and I spend the night at his house and we're super close. We recently took a trip to Florida to go car shopping for him and his mom said things about "finding us a family car" and getting a car with enough trunk space for when me and him travel. I think she's planning on us being together for a long time. She talks to me about my career, kids, marriage, where I wanna live, and all kinds of stuff. Is this normal or is it crazy that she plotting on my future? This is my first boyfriend but it's catching me off guard bc I'm literally 18 and she thinks about us being married