The solar panels on the RV are mainly used to provide electricity for the interior lighting and daily uses like charging phones. It's implausible to power the whole vehicle just with these panels.
However, given the current situation, this kind of function is urgently needed.
After making some calculations and checks, Xu Xiu concluded that daily lighting could totally rely on the current stock of electric scooter batteries, and two expandable solar panels could be installed on the RV. The solar panels could be folded back onto the roof when not in use, without interfering with normal driving.
If the area of the rear two cabins were taken into account, they might be able to support some extent of driving.
Such a modification was not troublesome for her. The only inconvenience was the lack of vehicle modification ability, but it was indeed necessary to install some retractable solar panels in advance.