Originally Posted by signes
Would vastly prefer a lighter car with the same output (or even less, depending on many othher factors.) Your estimated weight savings above seems very optimistic (and support for it?) but regardless of the actual numbers we are finally getting to a point where mass manufacturing of these materials will provide the scale to make them economically viable. Until the gov't/safety regs are modified to add even more weight...
The 300-700lbs is from the article link in the top post, quoted from BMW in that they save that much weight from conventional materials.