Just one minor comment, he used to spend $250 a month on gas, i'm amazed, thats absolutely nothing. Here in the UK it costs me £100GBP to fill my tank with diesel, which lasts about 10 days, granted i drive a fair bit, but £300 a month is $465 USD. So i hear ye, bring the electric cars and their super charging stations over here, i'll deal with the minor inconvenience of waiting an hour for a charge, which i personally think is a temporary problem. In the mean time, i'm planning to see how viable making my own biodiesel is.
[1] Cheapest gas in California is $3.71 a gallon.
[2] Cheapest petrol in UK is £1.32 a litre (rounded)
100 litre fill up in UK is £132 or $204.88
100 litre fill up in Cali is £97.89 or $124.43
[1] http://www.californiagasprices.com/
[2] http://www.petrolprices.com/
Making your own biodiesel is completely viable. Until the tipping point where there are too many people making their own biodiesel, and you find yourself competing with everyone else for access to oil/raw material
