Uber started in 2010 to solve a simple problem: how do you get a ride at the push of a button? In late 2015, we hit a big milestone: one billion trips. Six months later, we crossed two billion.

And just a few weeks ago, on Saturday, May 20, 156 trips started simultaneously at 7:29:06am GMT, putting us over the five billion mark.

There is no doubt the service is successful. I would be interested to know how many trips Lyft is at—that’s the service I use the most.