floydv
Elio Addict
Sounds like "proof of concept" in this case means proving some meaningful number of entities fully commits by contract to buying or leasing an Elio. This may be why the E series of 25 engineering/testing prototypes don't qualify as proof of concept, and neither do the thousands of "All Ins" (i.e. because the fine print says your All In reservation does not guarantee you'll get an Elio, nor does it require EM to provide you one).