The Dodo Juice Blue Velvet Wax Panel Pot is enough to do three to four coats on a normal sized car.
Expect a 2-4% dye tint on paintwork - it won't be that noticeable but it is there and it does darken the original finish. Metallics/pearlescents are going to enjoy the best results here. Recoating interval is a recommended 2-3 months.