While you have a point, I'd suggest a solar car is feasible if it is designed lighter ie. an electric bike puts out 250W which is enough to take a rider to 15mp

While you have a point, I'd suggest a solar car is feasible if it is designed lighter ie. an electric bike puts out 250W which is enough to take a rider to 15mph. Something like the Citroen Ami (or electric TukTuk, or any of the small chinese EVs) which weighs 450kg is a halfway house between Teslas and bikes. The Ami can charge off 13A 240V in 3 hours (6kW motor and 5.5kWh battery pack), and is useful for a number of duties eg. school runs, shopping, mobility, bad weather. Obviously the car featured here isn't designed around light weight<->practical charging but I reckon you could make an ultralight design for 4/5 people. The other problem is other larger cars on the road, that's a separate debate from the technical one.