On the outskirts of the Chinese city of Hangzhou, a small dilapidated temple overlooks a graveyard of sorts: a series of fields where hundreds upon hundreds of electric cars have been abandoned among weeds and garbage.

Similar pools of unwanted battery-powered vehicles have sprouted up in at least half a dozen cities across China, though a few have been cleaned up. In Hangzhou, some cars have been left for so long that plants are sprouting from their trunks. Others were discarded in such a hurry that fluffy toys still sit on their dashboards.

The scenes recall the aftermath of the nation's bike-sharing crash in 2018, when tens of millions of bicycles ended up in rivers, ditches and disused parking lots after the rise and fall of startups backed by big tech such as Ofo and Mobike.

This time, the cars were likely deserted after the ride-hailing companies that owned them failed, or because they were about to become obsolete as automakers rolled out EV after EV with better features and longer driving ranges. They're a striking representation of the excess and waste that can happen when capital floods into a burgeoning industry, and perhaps also an odd monument to the seismic progress in electric transportation over the last few years.

About a decade ago, encouraged by government subsidies, hundreds of automakers across China, both established players and startups, waded into electric-car manufacturing. They churned out huge numbers of early-stage EVs — relatively no-frills cars whose batteries in some instances could only run for around 100 kilometers (62 miles) on a charge.