I watch most 2x72 videos that I come across and have to say this is the most refreshing and innovative build I've see in a long time. It has never cross my mind to use E-Bike motors in such a way. Given that I can see this as a great way to build up a few tools for an off grid site. 48 VDC photovoltaic systems are easy to implement so you could even have staying power at a site.