In the United States, an internet connection of some sort is practically a requirement for a modern lifestyle. Just about everybody is connected these days, whether it's to ensure that they can insert a social life somewhere in their stressful and high-energy cycle of work and necessities, or to ensure they're always available for work purposes, even off the clock. Even large swaths of the homeless and poor population connect at public hotspots through secondhand devices, or head to their local library. For some in rural and especially low-income areas, however, there is no way to connect to the internet at all without paying a significant amount of money. For a select few in very rural parts of the country, internet service either isn't available, or is limited to dial-up speeds on satellite internet, which barely serves the basic needs for a connected individual.
This is a situation that Hillary Clinton wants to change. The Democratic presidential candidate wants high-speed broadband for everybody in America; a noble goal, to be sure, but also lofty. The kicker, however, is that she wants it by 2020. That means three years and some change. While it's not only possible, but entirely likely that self-driving cars and 5G networks will be ready for commercial use by then, rolling out broadband and other high-speed internet technologies to under-served or unconnected areas is a bit more complicated a proposal than simply building out small cell networks in existing service areas, or letting self-driving cars gather enough data to become truly safe.
In order to get broadband out to every American household and in all of the public areas by 2020, we would essentially have to devote all possible resources to it. Broadband companies would need to hire thousands of new installers nationwide, if not tens of thousands, all working serious overtime. This is far from realistic for most companies, which would mean it would require a ton of government aid, something that's unlikely to happen these days. America's budget is already spread thin enough that not only has cutting the budget become a valid political platform, but candidates have talked about taking the money out of a wide variety of controversial places. In short, if Clinton is to get her wish, it will require an incredible effort on the part of companies, city and county workers, and the American government. While this may just become the case if she's elected, chances are good that this rather impractical goal will find itself pushed out or cancelled altogether.