Lyft drivers are behind the wheel in a large percentage of cars on Chicago roadways—and now the ride-share company is looking to gobble up many of the bikes on the streets too.

Divvy—about to celebrate its fifth anniversary—launched in the summer of 2013 at the cost of nearly $28 million. It has expanded its fleet from only 750 bikes at 75 stations to 6,000 bikes at 580 stations across the city. According to Motivate, there were over 400,000 rides taken during the month of May.