If it is baraat in North India, it is Maapillai Azhaippu in Tamil Nadu. The bridegroom is taken round the streets in a decorated vehicle. There are specialists who provide customised cars for this purpose. Usually, these are very old cars (many are Heralds, some are even Dodges and Studebakers) which are not fit for normal use.
This car was in front of a mandapam in Washermanpet. It looked like a Herald which had undergone a major body transplant. Just opposite to this mandapam was the garage of a contractor who supplies such vehicles for weddings and movies.