Transcript for Driverless Car Comes to Capitol Hill
-- But that they so whether -- -- that at a -- please -- Basin beams light beams that a lot of it then -- object and get bounced back. And -- this basically -- out Slade Scott hey I send something out. He came back took so -- so that about that -- that object must be some distance away.
This transcript has been automatically generated and may not be 100% accurate.