Lime, the 18-month-old, San Francisco-based company whose bright green bicycles and scooters now dot cities throughout the U.S., launched a pilot program in Tacoma, Washington, today, but that tiny victory might have felt short-lived. The reason: on the opposite side of the country, a Lime rider was killed today by an SUV while tooling around Washington D.C.’s DuPont neighborhood. The local fire department shared video of the rescue, which shows that the victim, an adult male, had to be pulled from the undercarriage of the vehicle.

It’s the second known fatality for the company following a death earlier this month in Dallas, when a 24-year-old Texas man fell off the scooter he was riding and died from blunt force injuries to his head.

On the one hand, the developments, while unfortunate, can hardly come as a surprise to anyone given how vulnerable riders or e-scooters are. E-scooter use is on the rise, with both Lime and its L.A.-based rival Bird, announcing this week that their customers have now taken north of 10 million rides. At the same time, city after city has deemed their use on sidewalks illegal out of fear that fast-moving riders will collide with and injure pedestrians. That leaves riders sharing city streets with the same types of giant, exhaust-spewing machines that they hope to increasingly displace. In fact, sales of traditional SUVs has continued to surge, thanks in part to low unemployment, high consumer confidence, and Americans’ enduring love with gigantic vehicles.

One solution to the issue, and one for which the e-scooter companies and their investors have been advocating, are protected lanes that would allow e-scooters to be operated more safely. Bird has even publicly offered to help fund new infrastructure that keeps cyclists and scooter riders safer.

Another possible answer would appear to be mandating the use of helmets with e-scooters, though California evidently disagrees. On Wednesday, Governor Jerry Brown signed a bill into a law that states Californians riding electric scooters will no longer be required to wear helmets as of January 1.

The bill was reportedly sponsored by Bird.