He Umpa,
I was thinking, since you can get flexible solar panels now, to cover the whole Sinclair.
But I am afraid you have to wait a couple of days before you have enough power to drive a couple of miles.
Maybe as some sort of rescue accessory, you take a 80 square feet solar blanket, spread it out when your in battery trouble and after a few hours it can bring you home
On the other hand, there is a chain and pedal rescue mechanism already build in. That could help you in this situation.