Timing is bad, but we published a huge study on Uber & Lyft impacts on cities & found they increase average vehicle ownership. https://www.cell.com/iscience/fulltext/S2589-0042(20)31130-5 Anyway Uber is "skeptical of the methods" but guess what we anticipated this & controlled for the issues they raise, so stay mad

Some in-depth, professional, and nuanced writeups of our paper from @maxinejoselow in E&E: https://www.eenews.net/climatewire/stories/1063721973/print and @A_W_Gordon in Vice: https://www.vice.com/en/article/n7v4kd/uber-and-lyft-say-they-reduce-car-ownership-but-that-might-not-be-true

honestly they/you all missed an opportunity to roast me for using an iPhone with a home button in our graphical abstract. I take full responsibility

this coulda been an unreviewed working paper 2 years ago, but that woulda been, what's the word, bad

Knowing how much work the lead PhD student, the now Dr. Jake Ward, put into this paper to ensure confidence in the results, test for robustness, and state its limitations, the "skeptical" comment upset me. We always welcome critiques & improvements but at least read the paper.

Here's the CMU press release about our paper on how Uber/Lyft entering an urban area increases car ownership, on average: https://engineering.cmu.edu/news-events/news/2021/01/0106-transportation-networks.html and here's a great thread by the corresponding author Prof. @JJMichalek with some figures from the paper: https://twitter.com/JJMichalek/status/1346845363790106631?s=20.