In DC we also have JUMP (tho this Uber integration seems to be SF only), in addition to ofo, spin, mobike & limebike. And in my experience JUMP doesn't suffer from the majority of the issues the other dockless providers do. Their bikes are much higher quality and lock to something. This quality comes at a price, so the provider is more invested in bikes remaining in operation, whereas the other providers' bikes are so cheap that the companies treat them as disposable leading to most of the problems.

Re: vans -- dockless providers do this too (at least in DC, where they're required to)

Edit: and since this is HN, I've gotta point out that JUMP is also the only dockless operator in DC with an easy to use & publicly accessible API.