CarMaxCarMax initiated curbside, contactless pickup in April.The COVID-19 has forced car dealers to radically alter their business models in a matter of weeks.With showrooms shut down and both customers and employees worried about safety, dealerships have embraced online sales, digital financing, and touchless deliveries in ways that they had resisted for years.Going back to business-as-usual isn't an option. "The consumer's behavior has undoubtedly been changed in a lasting way," said Jim Lyski, chief marketing officer of CarMax, the nation's largest used-car dealer network.Visit Business Insider's homepage for more stories.Weekends are usually a busy time at car dealerships, with customers using their days off to shop for and often buy or lease new and used vehicles.Over the past five years,