So it'll only show walking directions?
I get that you're being flippant, but I did have a coworker who calculated the carbon footprint of his commute for various modes of transport, including walking. He came to the conclusion that, given the average amount of CO2 produced per calorie consumed, riding an e-bike was actually the lowest-impact way.
The question is borne of the understanding that electric vehicles merely frontload your carbon footprint, rather than eliminating it.