More financing is coming in for Bird,  this time potentially valuing the company at $2 billion, according to a new report by Axios.

There’s not a ton to add here compared to the last round (which happened just weeks ago), as the same dynamics are probably in play here. While Uber was a bet on car rides and generally getting around, Bird is that but at a dramatically more granular level — thinking short hops of a few miles in congested areas. Startups that are exceedingly hot can sometimes pull off these rolling rounds where investors are coming in at various points, especially as the model further proves out over time.

If you live in a major metropolitan area, you’ve probably seen Bird (and Lime) scooters hanging out on the sidewalks — potentially knocked over in a spot where someone might trip over them while checking his or her phone. That’s been a point of tension in areas like San Francisco, where Bird has had to temporarily come off the sidewalks as a permit system rolls out. Bird isn’t the first mobility-focused service that has faced regulatory challenges before, but it is one that’s become very popular very quickly.

This too, as Axios notes, could be an easy play to get into a hot market that a major ridesharing company could want to buy its way into. Uber acquired Jump, an on-demand bike service, in the midst of its own financing round. While bikes don’t seem to be getting quite the hype that scooters are, Lyft is also planning to acquire Motivate, an on-demand biking network.

Bird just weeks ago raised $150 million at a $1 billion valuation, while Lime raised an additional $250 million. Bird was valued at $300 million in a financing round earlier this year.