As Cadillac gets set to take on luxury electric offerings like the Audi E-Tron, Jaguar I-Pace, Mercedes-Benz EQC and Tesla Model X — and smaller, more affordable offerings like the Tesla Model Y and upcoming Nissan Ariya — will it be able to provide a compelling enough case not only to convince shoppers to switch from internal combustion engine vehicles, or other luxury brands or more-established EV manufacturers, but also to forego the up-to-$7,500 federal EV tax credit for which the Lyriq (and Teslas) will not be eligible?