It seems people are underestimating the capacity of solar panels on vehicles.  
It is a simple math problem. Encapsulation is also a challenge. However I don't 
have the math to calculate how fast a 3.3kw solar system would push a 3000 
pound vehicle.  It seems you would need 8kw to push a Leaf up to 45mph.  This 
is just a guess but it seems to me that a simple calculation of weight, CD, 
array size would be all you would need to calculate the usefulness of any solar 
vehicle.  Stella Lux is capable of 45mph with a 1.5kw solar panel, a weight of 
850 pounds(it can carry 4 people) and a CD of .16.  If you have a 22 ft x 8' 
vehicle like an aluminum Ultravan at 3,000 pounds (which is less than a Leaf)  
you would have good range but calculating how much solar would fit, the CD 
which I think is under .3 and the speed possible with the max panels is beyond 
me.  I do know that if you had a 3.3kw array you would be able to charge a 24kw 
pack in 10 hours making a useful vehicle. It might be able to do 20mph on 
solar.  I bet Dave Cloud could figure it out.  The Dolphin is a very cleaver 
vehicle.  I wish I had some land to work on an Ultravan.  Lawrence Rhodes
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