RE: California highways may soon produce their own power
Hmm... seems like schools do a louzy job in educating students about what energy is and IS and about what energy is NOT.
There is ONE simple law for you to memorize:
You CANNOT, ever, in ANY WAY, TAKE ANY FORM and ANY AMOUNT of energy by ANY MEANS, from ANY SOURCE, without actually SUBTRACTING that exact amount of energy from that source! (the rest is just details that confuse your brain).
There. You con't have to go back to school now.
You also don't have to pay for such ridiculous mediaeval projects.