The process of incorporating the technology into the U.S. aviation system will take years.
The chairman of the Federal Communications Commission announced Friday that his agency won't hold its auction of airwave licenses until the middle of 2015.
The commission had originally planned for a 2014 auction of spectrum — the frequencies that carry wireless signals.
But in a blog post Friday, FCC Chairman Tom Wheeler wrote that it is critical the agency avoid any technical glitches.
Rules allowing for CEO Jeff Bezos to realize his vision could take years to draft.
Privacy protections must be in place before Amazon delivers by drone, says Markey.
The cases, in which employees breached the agency's firewall, appear to be isolated.
Critics of the proposed rule change have already flooded the agency with protests and launched a White House petition against the plan.
Proponents call the commission's decision a temporary setback for the virtual currency.
It would likely be years before the vehicles are deemed street legal.
At the hearing, Rep. Albio Sires (D-N.J.) said he had “so many questions."
The House Transportation and Infrastructure Committee will meet Tuesday to consider the future of self-driving cars.
The hearing is a rescheduled meeting from last month, when the review was canceled in the midst of the federal government shutdown.