[color:"red"]Hybrid cars with battery packs[/color] that can be charged overnight. There is an added option for hybrid cars. It is not manufacture approved. You put a bank of batteries in a hybrid with a management and charging system. You can plug the car in over night and do not have to charge the battery using gasoline. The amount of energy used to charge the batteries on the grid is way more efficient and cost effective. There is still pollution involved as you are taking it from a power plant but much less. You will still have the Hybrid capability for places that you find not extension cord.
[color:"red"]How about a car that runs on vegetable oil?[/color] Take a diesel automobile, any of them. Add a second gas tank that can be switched into the fuel flow. Use the cooling system to heat the second gas tank so you can get the oil thin enough to run through system. Start and end the running of the engine on the diesel fuel but in the middle switch the thinned oil. Make it switch automatically so you do not have to think. Vegetable oil in bulk is less than $1 per gallon and gets the same mileage per gallon. This system already exists and can be about $1000 or less to install.
[color:"red"]How about Thermal (not solar) Voltaic Cells?[/color] I have not heard of getting 35% efficiency out of Solar Voltaic Cells. Most of them you will see at about 8%. Military is up to 12% maybe more by now. 35%! Wow, love to see it! Thermal Voltaic is same principle as Solar but uses heat differences to instead of catching suns rays. These will work anywhere, even at night. They are cheap to make and can be stacked. Today they are not available. I was trying to put a group of people together to buy the patent but was too slow. I think it went to someplace like Korea. The inventors live in Texas and talked with them on the phone at length about it. I am still trying to find them.