After an onslaught of announcements about self-driving cars at CES, it’s almost hard to believe that even if you want to buy an autonomous vehicle, you can’t. It’s a strange era, as car companies try their hand at something new: selling an idea, rather than a product that doesn’t yet exist, and won’t for some time. But throughout 2017, automakers, suppliers, startups, and giant tech companies spent billions of dollars on R&D, followed by millions of dollars marketing a good chunk of their R&D advancement at CES this week.