Mr. Tarasco, I'm very compelled by your technology—in fact I'm compelled by what all of you do—and I'm trying to understand. When you talk about flywheels versus batteries, I thought I heard you say in testimony that you haven't put these into any vehicles as yet.
I have two questions. Number one, why do they have to be hybrids only?
Number two, if I might, why haven't they been put into vehicles as yet, if I've understood that correctly?