The 7k tax credits are not only _not_ going to pass in 2021, but they _definitely_ won’t be retroactive if they ever do. They would exist to incentivize the purchase of EVs for those that would otherwise not purchase them. If you’ve already purchased one, you obviously didn’t need that incentive.
The tax credit is very likely to pass in some form. It has good support at all levels. I agree it probably will not be retroactive.