If the CAT has a Torvec Steer-Drive then...
it must be new, because the CAT that I mentioned had a "differential steering system" not a Torvec Steer-Drive.
CAT might have had a D7 since 1986, but the D7E is new. The CAT D7E is an FTV type vehicle and it is a tractor, not a Dozer.
When they (HQ) explained that to you, there must have been something lost in translation.
I'll go along with the fact that the "differential steering system" has been in the D7 tractor since 1986, but it certainly has been enhanced since the original version in order for it to "be the first differential steer tractor ever to be able to make lock-track pivot turns".
Well, anyway, my point was that the competition seemingly is making strides to commercialize enhancements to their similar products & technologies which will make all of Torvec's patented inventions in greater demand as they will accomplish the same desired results (hopefully in a more efficient manner).
The way I see it is; once this happens it should open doors to the commercialization of Torvec's technologies and demands for Torvec's products quite automatically.