Chemical guys is overpriced garbage IMO. For regular washes the gold standard is Optimum No Rinse. If a deeper clean is needed, CarPro Reset is probably the best. For basic protection, Griot's Garage 3 in 1 ceramic spray is amazing. Turtle Wax Hybrid Solutions ceramic is probably a close 2nd...
Car companies are notoriously inconsistent with how they report curb weight. I recall reading the measured weight for a recent Maserati was several hundred pounds above the actual listed weight. I do appreciate the effort in this video and it's nice to know the s650 base is not 200lbs heavier...