Today marks a big milestone for Lyft — one billion rides. That’s a milestone Uber hit in December 2015. Uber has since grown to 10 billion trips completed — including Eats deliveries — as of this past July. Uber, of course, had a bit of head start given it launched in 2009 while Lyft first launched in 2012.

This milestone for Lyft comes about a year after it announced it was completing one million rides a day. To celebrate it, Lyft employees are surprising 3,500 drivers with a free tank of gas.

Earlier this month, Lyft officially entered the scooter sharing space when it launched electric scooters in Denver, Colo. Lyft has since deployed its scooters in Santa Monica, Calif. as part of the city’s pilot program. Lyft’s entrance into scooters came close after its acquisition of bike-share company Motivate. We’ll be watching closely to see how Lyft’s additional modes of transportation impacts number of trips completed.