“Brian pointed out that we could take his car to the airport and they can pick it up later.”
You and your boyfriend are visiting your brother Brian and his wife in another city. You need to get someone to drive you to the airport tomorrow, but your brother and his wife have to work and won't be able to drive you. Your brother had a solution to this problem: drive his car and leave it at the airport, then he will go get it later. You explain the solution to your boyfriend like this.
Brian pointed out that we could take his car to the airport and they can pick it up later.
When you "point something out", you tell someone about an important piece of information that you don't think they knew.
You can use the phrase "point something out" or you can use "point out that ___" like in the example at the top.
This is a way to suggest that someone do something. When someone has a certain problem that they're trying to solve (like how to get to the airport), you can make a suggestion using "you could ___" or "we could":
A: I don't know of anywhere to go for dinner around here.
B: Well, we could go to an Italian place I know nearby.
To "take" a car to somewhere means to drive it to get there.
When you go somewhere in order to get something, you can describe your action as "picking something up". You can also use "pick something up" when you're on your way to another place and you stop to get something:
Hey, can you pick up dinner on your way home?
When you use "it", "them", "something", etc, use this order: "pick ___ up".
When you use a longer phrase, use this order: "pick up ___".