What to know about Amazon’s new ‘pay-what-you-want’ shipping option

Now Playing: How Uber has made a huge impact on the world Now Playing.

Uber’s $1.5 billion acquisition of ride-hailing company Grab brings Uber to the doorstep of millions of AmericansNow Playing: Uber wants to get you on the road to work with its new UberPOOL appNow Playing.

Elon Musk’s SpaceX launches Falcon 9 rocketNow Playing, Trump blasts Uber and Lyft’s ride-sharing dealsNow Playing Trump says he wants to eliminate the minimum wage and increase the national minimum wageNow Playing Uber says it’s closing down a facility in the Philippines.

Now Playing Trump’s plan to build a wall between the US and Mexico.

Now The Next Web’s Dave F. Walker has more.

Now, Trump says ‘we will end the trade deficit with China.’

Now Playing The latest on the opioid crisisNow Playing Is there a ‘black swan’ event happening in the U.S.?

Now Playing Why are Americans so excited about the Trump administration?

Now Playing How Uber’s deal with Grab could shake up the world of commerce.

Now Play The latest news from Washington, DC. Now