While there has been a lot of progress on consumer vehicles, and electric cars are common, things like large trucks aren't really available yet. You can't get a Tesla semi; best hope is for early next year. The first Tesla trucks are due out this year, but the Ford ones not until next year.
20 years is a lot, but you're talking about completely shifting a market to something that literally doesn't exist yet. And that means creating infrastructure: it will take a lot to charge a semi. These are heavy vehicles designed to go 800 miles without significant down time.
So, yeah, maybe they could push harder. But it would be incredibly aggressive to make it 2030 -- for vehicles that don't exist and may not be available in sufficient numbers by then, at any price. Maybe call it 2035, but at that point we're talking about minor differences.
The main thing now is to make it clear that it's something they're going to do, so start planning to shift your fleet and don't come whining in 2030 when you say you can't do it in a measly 10 years. You had 20.
