The Cadillac dealer where I bought my ELR has two Fiskar Karmas on display. I believe they are owned by the dealership owner. They also have charge points in the shop area plus four right out front of the showroom.
I don't want to test drive a CT6. I am bad about snap decisions that bite back later.
The all-glass roof allows a radical re-design of the assembly line. The interior can be installed through the roof robotically.