Aptera has a solar-charged reverse trike EV that manages some impressive range from a day's worth of LA sun. If the panels ever get closer to 100% efficiency it'd make a great little commuter for sunny locales.
Weight/rolling resistance would be second so battery gravimetric density and better tires is the next thing to improve. We can probably get small sedans slightly under 200Wh/mi or 5 miles for every kWh.