Julie, Ichika and the MC travel to Japan to visit her father (he wants to meet her baby) at the end of chapter 16
Tina is going to be looking at a 1975Chevy Nova he will talk her out of it for his mom's Porsche can see part of it in chapter 8 when he and Sara go to wash dad's car (if you can get past staring at Sara butt (red n white striped bikini)