That’s a short-sighted way to look at it. Less than 10% might come from personal vehicles but 31% comes from commercial transportation which can also be electrified. On top of that, 37% of remaining emissions come from generating energy and electricity from fossil fuels. As more of those sources become alternative sources like wind, water, solar, etc., electric vehicles (including commercial vehicles) take a huge chunk of emissions and dirty forms of energy away.

http://climatechange.chicago.gov/ghgemissions/overview-greenhouse-gases

We don’t need carbon credits. We need clean sources of energy that are sustainable. If we were really desperate, we could come up with nuclear sources but that would need more public support and is rife with bad waste.

No one said anything about Elon. But you’re wrong about electric cars.