The 4WD thing. I tried to configure a Tucson on the Hyundai site and it gives two options. Both plug in hybrid ultimates 1. 2WD auto and 2. 4WD Manual
Both the 2wd and awd are automatics. The 2wd variant wasn’t out, when I ordered mine however, I would have gone the the awd anyway. The 2wd gets about 5 mile more offiicial electric range.