It’s always good to have at least one friend with a really large vehicle suitable for road trips, etc. And, in my experience, it seems the girl with the most stuff to bring better be the one willing to drive! (or, at least, very generous with the gas money)
And, yes, next week we get to meet our fourth and final main character–can they really all be main characters? Maybe core ensemble would be more appropriate? At any rate, you’ll get to know about the last of the foursome and then we’ll get to the ‘serious’ business of the Road Trip.