For the people who read "fertilize" and think pollinate: plants already do this a lot.
I'm not going to knock this research, but we're doing so much work in understanding and cultivating the soil microbiome which seems more promoting. For example, bean plants, especially will do a lot to cultivate nitrogen-fixing bacteria, and farmers are starting to add bacteria to the soil like they would add fertilizer.
TL;DR: EV bike cabs can only do 4-5 trips before they need to be charged, and if they break down they need to be sent back to the manufacturer because local mechanics can't fix them.