Well bro.. Its good to see you are looking for a car.. but without know the actual or all the information from your side none of people can give you reply.
Some luxury cars i can suggest you. like
Bugatti Veyron
BMW 7 Series and BMW 5 Series also good
You can go for Audi too.
Rolls Royce also a good choice as suggested by MichaelEthan. You have to decide which one you want as per your budget.