solar powered electric vehicle.

Lol, let's see an RV is going to need at a bare minimum 100kWh of battery, in a van footprint, with wings you can maybe fit 3kW of panels. In an average NA summer day you get about 6 hours of full sun equivalent so you can get 18kWh of power. If you want to go 150-200 miles every week I guess you can have a solar powered RV.