Where does one buy a car online?

There are several places where you can buy a car online. Some popular options include:

<code>Online car dealerships, such as Carvana, Vroom, and AutoNation, which allow you to search for and purchase vehicles entirely online.
Online marketplaces, such as Craigslist, eBay Motors, and Facebook Marketplace, where individuals and dealers can list and sell vehicles.
 
Manufacturer websites, such as Ford, Chevy, and Toyota, where you can build and purchase new vehicles online.
 
Online auto auctions, such as Copart, IAA, and Manheim, where you can bid on and purchase vehicles. </code>

It's important to thoroughly research the vehicle and the seller before making a purchase, and to make sure that the vehicle is in good condition and has a clear title. Additionally, some of these platforms may not be available in all regions, so it's best to check the availability before buying.