feds will develop an insurance program, similar to National Flood Insurance Program.
Maybe, maybe not.
Auto, like property, is regulated at the state level. Some states may decide to require EV coverage as a matter of being allowed to do business in that state for ay line of insurance. That may result in premiums being so high that EV owners and prospective owners decide the market ain’t worth it and move on to another state or car type. With a shrinking pool, premiums have to go higher.
In other scenarios, some insurers may stop insuring EVs, write limited policies (exclude liability for certain events) or exit a state market entirely.