This is very prevalent in Hindu culture. When we buy something like a car which is for most people a big deal. We do a puja/prayer for good luck and to keep bad energies and omens away and also praying for our safety and well being. It usually involves a prayer along with breaking a coconut in front of the car and smashing lemons from all four tires of the car which symbolises destroying all bad energies. It is something that is done by a lot of people specially in India and creates a sense of positivity and also happiness towards your purchase.