The number "two dozen" is because every full moon and new moon, the tides are more extreme because the tidal effects of the sun and moon are additive. So every full moon and new moon the high tide might be two feet higher than average. Pretty tough if you are right at sea level.
According to NIST, it takes 33.40 kilowatt-hour (kWh) of electricity to get the energy equivalent of one gallon of gasoline. A 100% efficient solar panel, if it existed, could get about 1 kW per square meter of panel, and if your whole car were covered with solar panels I don't see how you'd get more than 3-4 square meters. Since real panels, really good ones, are more like 25% efficient, under ideal direct sunlight you're only going to get 1 kW of power, or 1kWh of energy per hour, and with just a square-meter panel on your car roof you'd get a quarter of that. So you could collect sun all day and perhaps get enough energy to go ten miles if the sun is strong. You'd still need to plug in unless your commute is really short.
Check the math. 12%, not 1.2%. Still not super-generous.
The number "two dozen" is because every full moon and new moon, the tides are more extreme because the tidal effects of the sun and moon are additive. So every full moon and new moon the high tide might be two feet higher than average. Pretty tough if you are right at sea level.
According to NIST, it takes 33.40 kilowatt-hour (kWh) of electricity to get the energy equivalent of one gallon of gasoline. A 100% efficient solar panel, if it existed, could get about 1 kW per square meter of panel, and if your whole car were covered with solar panels I don't see how you'd get more than 3-4 square meters. Since real panels, really good ones, are more like 25% efficient, under ideal direct sunlight you're only going to get 1 kW of power, or 1kWh of energy per hour, and with just a square-meter panel on your car roof you'd get a quarter of that. So you could collect sun all day and perhaps get enough energy to go ten miles if the sun is strong. You'd still need to plug in unless your commute is really short.