By their thirtieth birthdays, Halliday and Morrow were both multimillionaires. They purchased mansions on the same street. Morrow bought a Lamborghini, took several long vacations, and traveled the world. Halliday bought and restored one of the original DeLoreans used in the Back to the Future films, continued to spend nearly all of his time welded to a computer keyboard, and used his newfound wealth to amass what would eventually become the world’s largest private collection of classic videogames, Star Wars action figures, vintage lunch boxes, and comic books.