The fully electric vehicle Ferrari Elettrica represents a new segment that Vigna said would bring new buyers to Ferrari. It builds on 15 years of electrification research at Ferrari, starting with Formula 1 technology that was first incorporated into the limited edition La Ferrari hybrid supercar that debuted in 2013.

The new Chevrolet Bolt feels like the kind of electric car the EV market has been waiting for -- something genuinely affordable that doesn't make major compromises. Starting at $28,995, it brings electric driving back into reach for regular buyers, and that alone feels worth celebrating.

Tesla ( TSLA -1.04%) is already one of the largest electric car companies in the world. But next year, its entire business model may be transformed. That transformation will be driven by a new business venture that some experts believe could add $1 trillion to $2 trillion to Tesla's valuation by the end of 2026.