BatteriesNotIncluded wrote on Apr 22^nd, 2014 at 2:18am:

Electric cars are great! Rechargeable electric cars are bullshit! [/quote]
How come? [/quote]

Carbon Dioxide-CO2-R744 is natural refrigerant with expansion to heat far greater than air or steam and for extremely less heat. CO2 turns cold when allowed to expand, this requires a very small cooling area easily fitting any engine. Having CO2 as drive agent to a hydro turbine creates a hydro turbine engine of 80% efficiency. Heating for the engine drive can be absorbed or applied by other means. Industry and University charts show the turbine generator produce 740 watts for each litre flow per second. The turbine generator itself may be able to supply it own heat needs and more is recorded by the figures. CO2 heat from +30*C to +50*C produces 16KW for each one litre of CO2 rotated per second. It Takes 0.076KW to heat one litre of water in one second (Watlow PDF). The force of CO2 +50*C (200 bar) to +100*C provides 8,000 bar force or 640KW of which 380KW is required for electric heating of the CO2. All the forces are easily contained by Stainless Steel. Reference 82% efficient turbine flow-power output.