![National Drive Electric Week 2018, Boulder, Colorado [CREDIT: NDEW, Diego Lopez]](https://images.hgmsites.net/tmb/national-drive-electric-week-2018-boulder-colorado-credit-ndew-diego-lopez_100700989_t.gif)
Among states, incentives for electric cars vary wildly—from Colorado, which offers a $5,000 tax credit for EV buyers, to Illinois, where the legislature just proposed a $1,000 annual registration fee for electric cars. As states implement—or discontinue—various EV incentives, the effect on sales has been dramatic. For example...