Yup, me and you are quite similar as far as knowledge on this subject goes, except you have a few extra sources I don't. Really appreciate you posting the link to that ISE, the DUO-Inverter! I haven't seen that thing in like 3 years, i thought they stopped making them. It would be awesome for a twin motor hot rod! And they say they can sell the motors separately from the controller?! MetricMind cannot do this, because of agreement with EviSol Europe, and now he is not selling them altogether.
Seen the Electric7.... that guy needs to open up the taps on that thing!

None of that granny peddle foot he has in the videos.
Come on Lutach, you and I both know the cost and complexity of a car with 500 miles range and 200mph capable... no easy means about it. What motors would you use? DC brushless? That's the only way IMO, and super expensive LiPo cells, BMS, etc. I have some pipe dreams too, you know. ;)
Have you heard of Shelby Super Cars new Ultimate Aero EV they announced?
Now this is something else, they say they are putting twin 500hp motors, AWD, and 200 miles range... and then when it gets weird, 10 minute charging on a 110volt outlet??? Either they wrote a typo and haven't publicly addressed it, or they don't know what they are talking about, or the third possibility, and my personal preference, they have tapped some sort of unknown energy source, possibly from the zeropoint field vacuum flux?

There first announcement last year, they said it would be 'years' between charging... and now it's 10 minutes on a 110volt outlet? Boy, wouldn't that be nice!
http://www.gizmag.com/lithium-ion-ba...ugh-mit/11244/
Did you see my post a couple weeks ago on A123's new chemistry they are coming out with in the next 2 years? 100mah/g (so thats 7500mah cells compared to the 2300mah M1 cells they have now)... and get this, 170kw/kg power density (400C rate). These are twice the energy density of the best lipo cells available today, these will change the landscape of electric vehicles NO DOUBT!
Check out:
http://www.uqm.com/propulsion_specs.php
If I had the money, I would use two 125kw units for 250kw, and only 180lbs.